CA2022990A1 - Toothbrush - Google Patents
ToothbrushInfo
- Publication number
- CA2022990A1 CA2022990A1 CA 2022990 CA2022990A CA2022990A1 CA 2022990 A1 CA2022990 A1 CA 2022990A1 CA 2022990 CA2022990 CA 2022990 CA 2022990 A CA2022990 A CA 2022990A CA 2022990 A1 CA2022990 A1 CA 2022990A1
- Authority
- CA
- Canada
- Prior art keywords
- handle
- portable toothbrush
- brushing
- cap
- brushing head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Landscapes
- Brushes (AREA)
Abstract
A B S T R A C T
A portable toothbrush comprising a handle having a first end and a second end. There is at least one brushing head provided having a plurality of bristle elements forming a single rounded tuft extending about an axis, the tuft having a height greater than its diameter. The brushing head is mounted at the first end of the handle and projects generally axially therefrom. In one embodiment the handle is hollow in order to allow replacement brushing heads to be stored there. Also a cap with clasping means may be provided.
A portable toothbrush comprising a handle having a first end and a second end. There is at least one brushing head provided having a plurality of bristle elements forming a single rounded tuft extending about an axis, the tuft having a height greater than its diameter. The brushing head is mounted at the first end of the handle and projects generally axially therefrom. In one embodiment the handle is hollow in order to allow replacement brushing heads to be stored there. Also a cap with clasping means may be provided.
Description
~` 2~22~9~
I
FIELD OF THE INVENTION
This invention relates to a toothbrush, and in particular to a portable toothbrush and gum stimulator that Icleans the teeth and stimulates the gingival tissues.
¦5 BACKGROUND OF THE INVENTION
~!A regular dental care program is important to maintaining the health of one's teeth and gums. Most people ifollow a routine of brushing their teeth at least twice a day; in the morning before they leave their homes, and in ,~10 the evening before they retire to bed. During the daytime however, following snacks and meals, it is less common for people to habitually clean their teeth.
More people would clean their teeth during the day ~if a convenient method for doing so existed.
`~ : 15 Typically, people find it inconvenient to ~ transport their toothbrush around with them during their ¦~ ~ daily activities. In addition to being bulky, conventional toothbrushes require water or toothpaste in order to be ; effective. A sink or other receptical is required in order 20 to clean~ the brush and rinse out one's mouth. Although various forms of portable conventional toothbrushes are known to exist, they still require water or toothpaste and a ` ~ sink in order to be properly used. Consequently, many people cannot be bothered to clean their teeth during the daytime.
Even people who are disciplined enough to follow a daily routine of brushing after meals may fail to consider the concurrent importance of maintaining the gums in a healthy condition. Proper dental care requires, in addition `~ to cleaning the teeth, a stimulation of the gumline.
30 Gingival tissues thrive on vigorous stimulation just as ` muscles and other soft tissues are revitalized by manipulation or massaging. It is believed that by vigorous ; cleansing and then invigorating the gum tissue, one can arrest gingival margin bleeding and subsequent underlying 35 periodontal pocket formation and bone loss.
~ 2~2~
,. ..
. .
Current practice suggests that soft bristled conventional toothbrushes are preferred for cleaning the teeth because the bristles are not so hard as to cause excessive wear to the tooth enamel adjacent the gingival margin. Unfortunately, vigorous stimulation of the gum tissue cannot be achieved through use of a soft bristled conventional toothbrush. Thu~" for those people that continue to brush with a soft bristled conventional toothbrush, a supplemental gum stimulation program should be 10 established.
As a supplement to brushing or as a form of gum stimulation, some people use toothpicks to clean their teeth after meals. Toothpicks do not require a sink, are portable, ; usually disposable, and do a fair job cleaning food that may 15 become wedged between the teeth and gums. In addition, a ; toothpick may succeed in partially penetrating the sulcus around each tooth thus stimulating the gum tissue. However, there are many disadvantages associated with toothpicks.
Many toothpicks are prone to splintering and the splinters 20 can become lodged between the teeth and injure the gums.
Wooden toothpicks tend to become soggy at their ends quickly making the end soft, pliable and ineffective. Plastic toothpicks are often too sharp and may cut the gums.
`~ ; Finally, conventional toothpicks do not provide the vigorous 25 stimulation of gum tissue necessary to promote healthy gums.
It is therefore desirable to have a tooth cleaning device that could be used to supplement a routine of brushing twice a day, orj else that could be used itself as a complete dental care system. The device should provide a 30 vigorous stimulation of the gums as well as a thorough cleaning of the teeth.
; The device should be as convenient as possible to use in order to encourage regular dental care, and to discourage the use of harmful toothpicks. Thus it should be 35 portable so that it may be used anywhere, and accessory-free so that it does not require either a sink or toothpaste.
' ;: 2 ~
SUMMARY OF THE INVENTION
. . _ In accordance with the present invention, there is provided a portable toothbrush comprising a handle having a first end and a second end. There is at least one brushing head provided having a plurality of bristle elements forming a single rounded tuft extending about an axis, the tuft having a height greater than its diameter. The brushing head is mounted at the first end of the handle and projects generally axially therefrom.
Preferably, the handle is hollow in order to allow replacement brushing heads to be stored there. Also, a cap may be provided in order to protect the brushing head from being damaged.
The invention as disclosed features many of the 15 advantages associated with the brushing head of the toothbrush previously disclosed in my U.S. patent 4,679,272 and Canadian patent 1,247,311. The brushing head is used to clean primarily the gingival margin and interproximal areas of the teeth, and to invigorate the gums. The present 20 invention is intended primarily for cleaning the outer or buccal surfaces of the teeth and the interproximal areas.
~`~ For the motivated user, the bristles can access the gum line in other areas of the mouth as well. The portable nature of the present invention allows a continuation of proper dental 25 care at times when it is inconvenient for the user to use either the toothbrush suggested by my earlier invention, or any other toothbrush for that matter.
By establishing a routine of vigorous brushing with theltoothbrush it has been found that one can obtain 30 thorough cleaning of the gingival margin and interproximal areas of the teeth as well as stimulate the adjacent gum tissue. While initially the gums may feel tender and may even bleed, it has been found that with regular stimulation with the toothbrush, these symptoms fade. Such stimulation 35 can benefit the gums. It is expected that regular gum stimulation can prevent any further internal bone loss where ~ :
I
FIELD OF THE INVENTION
This invention relates to a toothbrush, and in particular to a portable toothbrush and gum stimulator that Icleans the teeth and stimulates the gingival tissues.
¦5 BACKGROUND OF THE INVENTION
~!A regular dental care program is important to maintaining the health of one's teeth and gums. Most people ifollow a routine of brushing their teeth at least twice a day; in the morning before they leave their homes, and in ,~10 the evening before they retire to bed. During the daytime however, following snacks and meals, it is less common for people to habitually clean their teeth.
More people would clean their teeth during the day ~if a convenient method for doing so existed.
`~ : 15 Typically, people find it inconvenient to ~ transport their toothbrush around with them during their ¦~ ~ daily activities. In addition to being bulky, conventional toothbrushes require water or toothpaste in order to be ; effective. A sink or other receptical is required in order 20 to clean~ the brush and rinse out one's mouth. Although various forms of portable conventional toothbrushes are known to exist, they still require water or toothpaste and a ` ~ sink in order to be properly used. Consequently, many people cannot be bothered to clean their teeth during the daytime.
Even people who are disciplined enough to follow a daily routine of brushing after meals may fail to consider the concurrent importance of maintaining the gums in a healthy condition. Proper dental care requires, in addition `~ to cleaning the teeth, a stimulation of the gumline.
30 Gingival tissues thrive on vigorous stimulation just as ` muscles and other soft tissues are revitalized by manipulation or massaging. It is believed that by vigorous ; cleansing and then invigorating the gum tissue, one can arrest gingival margin bleeding and subsequent underlying 35 periodontal pocket formation and bone loss.
~ 2~2~
,. ..
. .
Current practice suggests that soft bristled conventional toothbrushes are preferred for cleaning the teeth because the bristles are not so hard as to cause excessive wear to the tooth enamel adjacent the gingival margin. Unfortunately, vigorous stimulation of the gum tissue cannot be achieved through use of a soft bristled conventional toothbrush. Thu~" for those people that continue to brush with a soft bristled conventional toothbrush, a supplemental gum stimulation program should be 10 established.
As a supplement to brushing or as a form of gum stimulation, some people use toothpicks to clean their teeth after meals. Toothpicks do not require a sink, are portable, ; usually disposable, and do a fair job cleaning food that may 15 become wedged between the teeth and gums. In addition, a ; toothpick may succeed in partially penetrating the sulcus around each tooth thus stimulating the gum tissue. However, there are many disadvantages associated with toothpicks.
Many toothpicks are prone to splintering and the splinters 20 can become lodged between the teeth and injure the gums.
Wooden toothpicks tend to become soggy at their ends quickly making the end soft, pliable and ineffective. Plastic toothpicks are often too sharp and may cut the gums.
`~ ; Finally, conventional toothpicks do not provide the vigorous 25 stimulation of gum tissue necessary to promote healthy gums.
It is therefore desirable to have a tooth cleaning device that could be used to supplement a routine of brushing twice a day, orj else that could be used itself as a complete dental care system. The device should provide a 30 vigorous stimulation of the gums as well as a thorough cleaning of the teeth.
; The device should be as convenient as possible to use in order to encourage regular dental care, and to discourage the use of harmful toothpicks. Thus it should be 35 portable so that it may be used anywhere, and accessory-free so that it does not require either a sink or toothpaste.
' ;: 2 ~
SUMMARY OF THE INVENTION
. . _ In accordance with the present invention, there is provided a portable toothbrush comprising a handle having a first end and a second end. There is at least one brushing head provided having a plurality of bristle elements forming a single rounded tuft extending about an axis, the tuft having a height greater than its diameter. The brushing head is mounted at the first end of the handle and projects generally axially therefrom.
Preferably, the handle is hollow in order to allow replacement brushing heads to be stored there. Also, a cap may be provided in order to protect the brushing head from being damaged.
The invention as disclosed features many of the 15 advantages associated with the brushing head of the toothbrush previously disclosed in my U.S. patent 4,679,272 and Canadian patent 1,247,311. The brushing head is used to clean primarily the gingival margin and interproximal areas of the teeth, and to invigorate the gums. The present 20 invention is intended primarily for cleaning the outer or buccal surfaces of the teeth and the interproximal areas.
~`~ For the motivated user, the bristles can access the gum line in other areas of the mouth as well. The portable nature of the present invention allows a continuation of proper dental 25 care at times when it is inconvenient for the user to use either the toothbrush suggested by my earlier invention, or any other toothbrush for that matter.
By establishing a routine of vigorous brushing with theltoothbrush it has been found that one can obtain 30 thorough cleaning of the gingival margin and interproximal areas of the teeth as well as stimulate the adjacent gum tissue. While initially the gums may feel tender and may even bleed, it has been found that with regular stimulation with the toothbrush, these symptoms fade. Such stimulation 35 can benefit the gums. It is expected that regular gum stimulation can prevent any further internal bone loss where ~ :
2~22~
- , such bone loss has occurred, and limit subsequent pocket formation and gingival recession.
,1 ~BRIEF DESCRIPTION OF THE DRAWINGS
For a better understanding of the present invention, and to show more clearly how it may be carried into effect, reference will now be made, by way of example, to the accompanying drawings, which show a preferred embodiment of the present invention, and in which:
Fig. 1 shows a perspective, exploded view of a 10 portable toothbrush according to the present invention; and Fig. 2 shows a cross section along line 2-2 of ' Fig. 1 of the portable toothbrush when assembled.
~: DESCRIPTION OF THE PREFERRED EMBODIMENT -`
Referring to Figs. 1 and 2, the portable -~`
15 toothbrush of the present invention is generally denoted by -;;~ the reference 10. The toothbrush 10 comprises a handle 12 having first and second ends 14, 16 and at least one brushing head 18.
The handle 12 is generally cylindrical and of a ~ ~ 20 sufficlent length that it may be comfortably held by the ;~ user. The handle is hollow substantially along its length `
and open at the second end 16. The first end 14 is closed, in order that the brushing head 18 may be fastened to it as ~`described below. The internal diameter of the hollow handle 25 12 is approximately equal to but slightly greater than the outside diameter, of the brushing head 18. This enables replacement brushing heads 22 to be stored within the hollow handle 12. The internal diameter of the hollow handle 12 ~; should be large enough to provide sufficient clearance to 30 allow the replacement brushing heads 22 to be easily removed from the handle 12.
The second end 16 of the handle 12 is closed by means of a releasable closure 20. A range of releasable closures 20 are known and may conceivably be used, the 35 preferred embodiment features a plug having a lip.
; `` .:
2~22~9~
The brushing head 18 comprises a body 24, which in this preferred embodiment is of generally square cross-section. From the lower end of the body 24, a screw shaft 26 extends. The screw shaft 26 is threaded on its outside for 5 engagement in a threaded bore 28 located in the first end 14 of the handle 12. Within the body 24, there is a cylindrical recess opening at the upper end of the body 24. Within this recess, a plurality of bristle elements 30 are located. The bristle elements are secured to the body 24 in known manner.
10 Alternative fastening means for fastening the bady 24 to the first end 14 of the handle 12 are conceivable. For instance, the screw shaft 26 could be replaced by a plain shaft in a corresponding plain bore. The bore would be countersunk at its lowermost end, and the end of the plain shaft melted or 15 otherwise deformed to fill the countersunk portion. This ; would secure the brushing head 18 by a rivet-type connection. The screw shaft 26 is preferable however, as this simplifies the attachment of replacement brushing heads 2~.
The exposed part of the body 24 has a height of approximately 7 mm. The bristle elements 30 form a tuft having an overall height of approximately 7 mm. The tips of the bristle elements 26 are cut to form a cone, which has a height of approximately 2 mm. At the base of the bristle 25 elements 30 where they leave the body 24, the tuft of bristle elements 30 has a diameter of approximately 3 mm.
The bristle elements 30 are formed from a nylon material, and each bristle çlement has a diameter of .008 inches.
There are approximately 180 bristle elements 30. The bristle 30 elements 30 are formed in pairs, so there are approximately 90 pairs. Each pair of bristle elements 30 is joined at the bottom, and passes under a retaining member secured to the body 24.
Also included in the preferred embodiment, is a 35 cap 32. The internal diameter of the cap is approximately equal to the outer diameter of the cylindrical handle 12.
However, the internal diameter of the cap 32 should be sufficiently greater than the external diameter of the handle 12 such that the cap 32 receives the first end 14 of the handle 12 including the attached brushing head 18. There j 5 should be a snug fit between the cap 32 and the handle 12, so that the cap 32 will remain on the handle 12 until physically removed.
The preferred embodiment further comprises I clasping means 34 in the form of a clasp attached to the ¦ 10 outer surface of the handle 12. The clasping means 34 enable the portable .toothbrush 10 to be secured to an external carrier such as the inside pocket of a jac~et or the outside pocket of a shirt. The clasp is similar to the standard clasp used with most pens. Although the clasping means 34 ; 15 are shown attached to the handle 12 in Figs. 1 and 2, the clasping means 34 may alternatively be attached to the outer surface of the cap 32.
The portable toothbrush 10 is used primarily to clean the buccal and interproximal surfaces of the teeth.
20 The use will ideally start at one end of the row of teeth and work around slowly to the other end. The brushing head 18 is applied to the gingival margin. It is vigorously moved as by a vibrating or oscillatory action. This will clean the ` buccal surfaces and invigorate and massage the gums. It has 25 been found that initially, the gums may be slightly tender and possibly there may be some gingival bleeding. However, experience shows that the gum tissue quickly adapts to the ; ~ extra stimulation. ;This extra stimulation improves the gum tissue. To be effective, the bristle elements 30 ideally 30 should be applied with sufficient pressure to cause the gums to blanch. As long as the portable toothbrush 10 is used properly and regularly, either as a supplement to regular brushing or as a complete dental care system, it should be possible to maintain good dental health.
It is to be appreciated that, while a prefexred embodiment of the invention has been described, many 2~2~
- 7 - ^.
variations are possible. Thus, although the bristle elements 30 are shown mounted in a separate body 24 screwed into the handle 12, the bristle elements 30 could be secured directly into the handle 12. Also, although the brushing head 18 is 5 shown projecting axially from the first end 14 of the handle 12, the brushing head 18 could project at a slight angle to the handle axis, in the range of 5 to 25 degrees. Further, brushing heads 18 could project from both the first end 14 and the second end 16 of the handle 12. The size, shape and lOgeneral arrangement of the brushing head 18 can be varied, and a mixture~ of different types and sizes of bristle elements could be employed.
~ '' . ~ .
.""'` ',' ~ ~.
: ,':: ~'
- , such bone loss has occurred, and limit subsequent pocket formation and gingival recession.
,1 ~BRIEF DESCRIPTION OF THE DRAWINGS
For a better understanding of the present invention, and to show more clearly how it may be carried into effect, reference will now be made, by way of example, to the accompanying drawings, which show a preferred embodiment of the present invention, and in which:
Fig. 1 shows a perspective, exploded view of a 10 portable toothbrush according to the present invention; and Fig. 2 shows a cross section along line 2-2 of ' Fig. 1 of the portable toothbrush when assembled.
~: DESCRIPTION OF THE PREFERRED EMBODIMENT -`
Referring to Figs. 1 and 2, the portable -~`
15 toothbrush of the present invention is generally denoted by -;;~ the reference 10. The toothbrush 10 comprises a handle 12 having first and second ends 14, 16 and at least one brushing head 18.
The handle 12 is generally cylindrical and of a ~ ~ 20 sufficlent length that it may be comfortably held by the ;~ user. The handle is hollow substantially along its length `
and open at the second end 16. The first end 14 is closed, in order that the brushing head 18 may be fastened to it as ~`described below. The internal diameter of the hollow handle 25 12 is approximately equal to but slightly greater than the outside diameter, of the brushing head 18. This enables replacement brushing heads 22 to be stored within the hollow handle 12. The internal diameter of the hollow handle 12 ~; should be large enough to provide sufficient clearance to 30 allow the replacement brushing heads 22 to be easily removed from the handle 12.
The second end 16 of the handle 12 is closed by means of a releasable closure 20. A range of releasable closures 20 are known and may conceivably be used, the 35 preferred embodiment features a plug having a lip.
; `` .:
2~22~9~
The brushing head 18 comprises a body 24, which in this preferred embodiment is of generally square cross-section. From the lower end of the body 24, a screw shaft 26 extends. The screw shaft 26 is threaded on its outside for 5 engagement in a threaded bore 28 located in the first end 14 of the handle 12. Within the body 24, there is a cylindrical recess opening at the upper end of the body 24. Within this recess, a plurality of bristle elements 30 are located. The bristle elements are secured to the body 24 in known manner.
10 Alternative fastening means for fastening the bady 24 to the first end 14 of the handle 12 are conceivable. For instance, the screw shaft 26 could be replaced by a plain shaft in a corresponding plain bore. The bore would be countersunk at its lowermost end, and the end of the plain shaft melted or 15 otherwise deformed to fill the countersunk portion. This ; would secure the brushing head 18 by a rivet-type connection. The screw shaft 26 is preferable however, as this simplifies the attachment of replacement brushing heads 2~.
The exposed part of the body 24 has a height of approximately 7 mm. The bristle elements 30 form a tuft having an overall height of approximately 7 mm. The tips of the bristle elements 26 are cut to form a cone, which has a height of approximately 2 mm. At the base of the bristle 25 elements 30 where they leave the body 24, the tuft of bristle elements 30 has a diameter of approximately 3 mm.
The bristle elements 30 are formed from a nylon material, and each bristle çlement has a diameter of .008 inches.
There are approximately 180 bristle elements 30. The bristle 30 elements 30 are formed in pairs, so there are approximately 90 pairs. Each pair of bristle elements 30 is joined at the bottom, and passes under a retaining member secured to the body 24.
Also included in the preferred embodiment, is a 35 cap 32. The internal diameter of the cap is approximately equal to the outer diameter of the cylindrical handle 12.
However, the internal diameter of the cap 32 should be sufficiently greater than the external diameter of the handle 12 such that the cap 32 receives the first end 14 of the handle 12 including the attached brushing head 18. There j 5 should be a snug fit between the cap 32 and the handle 12, so that the cap 32 will remain on the handle 12 until physically removed.
The preferred embodiment further comprises I clasping means 34 in the form of a clasp attached to the ¦ 10 outer surface of the handle 12. The clasping means 34 enable the portable .toothbrush 10 to be secured to an external carrier such as the inside pocket of a jac~et or the outside pocket of a shirt. The clasp is similar to the standard clasp used with most pens. Although the clasping means 34 ; 15 are shown attached to the handle 12 in Figs. 1 and 2, the clasping means 34 may alternatively be attached to the outer surface of the cap 32.
The portable toothbrush 10 is used primarily to clean the buccal and interproximal surfaces of the teeth.
20 The use will ideally start at one end of the row of teeth and work around slowly to the other end. The brushing head 18 is applied to the gingival margin. It is vigorously moved as by a vibrating or oscillatory action. This will clean the ` buccal surfaces and invigorate and massage the gums. It has 25 been found that initially, the gums may be slightly tender and possibly there may be some gingival bleeding. However, experience shows that the gum tissue quickly adapts to the ; ~ extra stimulation. ;This extra stimulation improves the gum tissue. To be effective, the bristle elements 30 ideally 30 should be applied with sufficient pressure to cause the gums to blanch. As long as the portable toothbrush 10 is used properly and regularly, either as a supplement to regular brushing or as a complete dental care system, it should be possible to maintain good dental health.
It is to be appreciated that, while a prefexred embodiment of the invention has been described, many 2~2~
- 7 - ^.
variations are possible. Thus, although the bristle elements 30 are shown mounted in a separate body 24 screwed into the handle 12, the bristle elements 30 could be secured directly into the handle 12. Also, although the brushing head 18 is 5 shown projecting axially from the first end 14 of the handle 12, the brushing head 18 could project at a slight angle to the handle axis, in the range of 5 to 25 degrees. Further, brushing heads 18 could project from both the first end 14 and the second end 16 of the handle 12. The size, shape and lOgeneral arrangement of the brushing head 18 can be varied, and a mixture~ of different types and sizes of bristle elements could be employed.
~ '' . ~ .
.""'` ',' ~ ~.
: ,':: ~'
Claims (9)
1. A portable toothbrush comprising:
a handle having a first end and a second end; and at least one brushing head having a plurality of bristle elements forming a single rounded tuft extending about an axis, said tuft having a height greater than its diameter;
wherein said brushing head is mounted at said first end of said handle, and projects generally axially therefrom.
a handle having a first end and a second end; and at least one brushing head having a plurality of bristle elements forming a single rounded tuft extending about an axis, said tuft having a height greater than its diameter;
wherein said brushing head is mounted at said first end of said handle, and projects generally axially therefrom.
2. A portable toothbrush as claimed in claim 1, wherein said handle is elongate and generally straight.
3. A portable toothbrush as claimed in claim 2, wherein said brushing head includes a body, and said bristle elements are secured in said body to form said tuft, said body being fastened to said first end of said handle by fastening means.
4. A portable toothbrush as claimed in claim 3, wherein said fastening means include a screw shaft located at one end of said body, and a threaded bore located in said first end of said handle.
5. A portable toothbrush as claimed in claim 4, wherein said handle is hollow substantially along its length and open at said second end, the internal diameter of said hollow handle being greater than, but generally equal to, the outside diameter of said brushing head so that replacement brushing heads may be stored within said hollow handle.
6. A portable toothbrush as claimed in claim 5, wherein said handle further comprises a removable closure for closing said second end of said handle.
7. A portable toothbrush as claimed in claims 2, 4 or 6, further comprising a cap for snugly receiving said first end of said handle and covering said brushing head.
8. A portable toothbrush as claimed in claims 2, 4 or 6, further comprising: a cap for snugly receiving said first end of said handle; and clasping means located on said cap for clasping said cap and said handle to an external carrier.
9. A portable toothbrush as claimed in claims 2, 4 or 6, further comprising: a cap for snugly receiving said first end of said handle; and clasping means located on said handle for clasping said handle to an external carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2022990 CA2022990A1 (en) | 1990-08-09 | 1990-08-09 | Toothbrush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2022990 CA2022990A1 (en) | 1990-08-09 | 1990-08-09 | Toothbrush |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2022990A1 true CA2022990A1 (en) | 1992-02-10 |
Family
ID=4145689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2022990 Abandoned CA2022990A1 (en) | 1990-08-09 | 1990-08-09 | Toothbrush |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2022990A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023016300A1 (en) * | 2021-08-07 | 2023-02-16 | 林彤恩 | Toe seam brush |
-
1990
- 1990-08-09 CA CA 2022990 patent/CA2022990A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023016300A1 (en) * | 2021-08-07 | 2023-02-16 | 林彤恩 | Toe seam brush |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |