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EP1536300A1 - Kalendermechanismus für eine Uhr mit zwei übereinliegenden Ringen - Google Patents

Kalendermechanismus für eine Uhr mit zwei übereinliegenden Ringen Download PDF

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Publication number
EP1536300A1
EP1536300A1 EP03027147A EP03027147A EP1536300A1 EP 1536300 A1 EP1536300 A1 EP 1536300A1 EP 03027147 A EP03027147 A EP 03027147A EP 03027147 A EP03027147 A EP 03027147A EP 1536300 A1 EP1536300 A1 EP 1536300A1
Authority
EP
European Patent Office
Prior art keywords
ring
date
teeth
rings
markings
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.)
Granted
Application number
EP03027147A
Other languages
English (en)
French (fr)
Other versions
EP1536300B1 (de
Inventor
Roger Willemin
Roger Metzger
Marco Bettelini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ETA SA Manufacture Horlogere Suisse
Original Assignee
ETA SA Manufacture Horlogere Suisse
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to EP03027147A priority Critical patent/EP1536300B1/de
Priority to SG200407199A priority patent/SG112095A1/en
Priority to KR1020040093756A priority patent/KR101093184B1/ko
Priority to TW093135280A priority patent/TW200519554A/zh
Priority to US10/991,489 priority patent/US6934221B2/en
Priority to CN2004100917318A priority patent/CN1621974B/zh
Priority to JP2004341920A priority patent/JP4537183B2/ja
Publication of EP1536300A1 publication Critical patent/EP1536300A1/de
Priority to HK05109891.6A priority patent/HK1077884A1/xx
Application granted granted Critical
Publication of EP1536300B1 publication Critical patent/EP1536300B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/25—Devices for setting the date indicators manually
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/253—Driving or releasing mechanisms
    • G04B19/25306—Independent date indicating devices activated by hand or by clockwork, e.g. calendar watches
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/253—Driving or releasing mechanisms
    • G04B19/25333—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
    • G04B19/25353—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by the clockwork movement
    • G04B19/25366—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by the clockwork movement manually corrected at the end of months having less than 31 days

Definitions

  • the present invention relates to a date mechanism with a large date comprising two superposed date rings, respectively upper and lower, one of which carries fifteen successive markings of a cycle of 31 positions, while the other carries the other sixteen markings.
  • Counter metering and cyclic display devices used in calendar timepieces for displaying the date are already known.
  • the analog display of the date is conventionally made using a date ring which comprises 31 sectors bearing the markings from 1 to 31.
  • a date ring which comprises 31 sectors bearing the markings from 1 to 31.
  • such a device has the disadvantage of not offering, for each sector, a field whose size corresponds to a 31 th of the circumference of the ring.
  • the dimensions of this field are insufficient to allow an easily readable date display.
  • the need for a device to display a "large date" on a field much wider than a 31 th circumference has been felt.
  • the Brandi patent teaches a date mechanism comprising mainly a date ring greater than sixteen sectors, superimposed on a lower ring with seventeen sectors.
  • the upper ring bears on fifteen of its sectors markings "17" to "31” while the last sector is equipped of a window.
  • the lower ring has on sixteen of its sectors the markings "1" to "16", while the last sector is free of marking.
  • the circumference inside of the two rings has teeth, a place for the upper ring and a place for the lower ring being toothless.
  • a training finger of date classically making a turn every twenty-four hours, coaching the calendar rings in a classical way, by action on their teeth.
  • the driving position of the finger relative to the teeth of the rings is such that, when a ring has its free position (aperture for the upper ring and sector free of marking for the lower ring), at the display location of the shows, the finger drive is in front of the tooth-free position of the ring concerned.
  • the Brandi patent provides a date mechanism for a timepiece which advantageously makes it possible to give the date indication a large format, substantially double that of a conventional date mechanism. It arises nevertheless a problem in the positioning of the date rings.
  • two jumper devices act respectively on the teeth of the upper ring and on the teeth of the lower ring. But, considering the fact that a place of the teeth of each of these rings is toothless, these chokers must be double-pointed and press on the tips of three successive teeth. These jumpers must therefore be large dimensions and are therefore bulky.
  • the characteristics mechanical restraint of the restraint exerted by the jumpers on the two rings of date are different depending on whether the missing tooth is in first, second or third position vis-à-vis said jumpers. So we have to find a compromise that ensure that whatever the position of the missing tooth, the jumper ensures satisfactory positioning of the ring concerned. Such jumpers are difficult to develop.
  • the present invention aims to overcome the disadvantages mentioned above and others by providing a date mechanism to give the date indication a large format, this mechanism comprising two superposed rings, respectively upper and lower, whose one carries fifteen successive markings of a cycle of 31 positions, while the other wears the other sixteen markings, a jumper device allowing to properly position the two rings.
  • the present invention relates to a date mechanism for timepiece such as a wristwatch comprising two rings of superposed date, respectively lower and upper, the surface of which divides into a plurality of sectors, the upper ring comprising sixteen sectors, fifteen of which respectively bear fifteen successive markings of a cycle of 31 positions and of which the sixteenth is a surplus sector with a window open or transparent, while the lower ring comprises seventeen sectors, of which sixteen respectively carry the other sixteen markings in the cycle of 31 positions and of which the seventeenth is a surplus sector, each of these rings being equipped with a peripheral toothing made of a succession of teeth regularly spaced apart and cooperating with training means in such a way that the markings of the lower ring appear successively in an area display through the window, the upper ring remaining stationary, then that, the lower ring being immobile, the markings of the upper ring appear successively in the display area, the upper ring covering the markings of the lower ring, the date mechanism further comprising a jumper device capable of stopping each ring in all desired position
  • the present invention provides a mechanism for timepiece calendar comprising an arresting device jumper simple to manufacture and allowing an adequate positioning of the two rings of date.
  • the jumpers according to the invention are constantly housed between two teeth successive teeth of each of the rings even during the passage of the tooth thinned.
  • the jumpers according to the invention thus end classically by two inclined planes that support between the tips of two teeth immediately successive steps to keep the relevant date ring in the desired position. These jumpers are therefore of classic design and exert on the rings of date a holding force of constant intensity, whatever the position said rings.
  • the present invention proceeds from the general inventive idea of provide a date mechanism for a timepiece whose device jumping device includes two space saving jumpers, simple to to manufacture and guarantee an adequate positioning of the date discs. This result is achieved because, unlike the prior art where, because of the that a place in the toothing of each of the date rings is devoid of tooth, the jumpers must cooperate with three successive teeth of the teeth of each of the rings to ensure the positioning of these rings, even during the passage of the missing tooth, according to the invention the missing tooth is replaced by a thinned tooth.
  • This thinned tooth plays the same role as the missing tooth, know how to define an extended rest position for the relevant date ring when it presents its free position at the display location of the watch, but ensures that the jumper will be constantly housed between two teeth immediately consecutive teeth of said ring. These jumpers are therefore classic type and exercise on the calendar rings a restraining force constant, even when passing the thinned tooth.
  • FIG. 1 is a view from above of a watch movement comprising a date mechanism according to the invention.
  • the date mechanism according to the invention comprises mainly an upper date ring 4 superimposed on a ring of lower date 6.
  • the upper date ring 4 has sixteen sectors, while the lower date ring 6 has seventeen sectors.
  • the upper ring 4 covers fifteen of its sectors markings "17" to "31" while the last sector is provided with an open or transparent window 8.
  • the lower ring 6 has meanwhile on sixteen of its sectors the markings "1" at "16" while the last sector is free of marking.
  • the inner circumference of the rings 4 and 6 has formed toothing a succession of regularly spaced teeth designated by 10 for the ring upper 4 and by 12 for the lower ring 6.
  • a place of the teeth of the rings upper 4 and lower 6 is provided with a thinned tooth designated respectively by 14 and 16.
  • the term "thinned tooth” means a tooth whose height, considered according to the direction perpendicular to the plane in which the date rings 4 extend and 6, is smaller than those of the teeth that precede and follow it.
  • the position of the drive wheel 18 relative to the teeth of the rings 4 and 6 is such that when one of these rings presents its free position (window 8 for the upper ring 4 and sector free of marking for the lower ring 6) at the display location 20 of the movement of shows 1 (aperture of the dial supposedly removed and which occupies the position where we see the number "16"), the drive wheel 18 is in front of the thinned tooth 14 or 16 of the ring concerned.
  • a jumper device 22 comprising two jumpers 24 and 26 acts on the teeth 10 of the upper ring 4 and on the teeth 12 of the ring 6.
  • the chokers must cooperate with three successive teeth of the teeth of each of the rings to ensure the positioning of these rings even when passing the tooth missing
  • the present invention proposes to replace the missing tooth with a tooth thinned, that is to say less high than the other teeth arranged along the inner periphery of the upper and lower 4 date rings.
  • the thinned tooth according to the invention plays the same role as the missing tooth according to the prior art, namely to define an extended rest position for the date ring concerned when it presents its free position to the display area 20 of the watch, but makes it possible to guarantee, by its presence, that the jumper will be constantly housed between two immediately consecutive teeth of the toothing of said ring.
  • the date rings 4 and 6 present each a stop, respectively 28 and 30.
  • Figures 2 and 3 show the detail of this arrangement.
  • the stop 28 extends perpendicular to the plane of the ring of upper date 4, while the stop 30 extends radially out of the perimeter outside the lower date ring 6.
  • the upper date ring 4 presents its window 8 at the display location 20, and simultaneously its thinned tooth 14 vis-à-vis the drive wheel 18.
  • the height of the tooth thinned 14 is such that the wheel 18 can not mesh with this tooth and drives only the lower date ring 6 which, to reach the represented position, will have been conducted successively by the drive wheel 18 in situations where he exhibited markings "11", “12”, ..., "15” and finally "16".
  • the stop 30 comes to bear against the stop 28.
  • the upper ring 4 will also be driven, so that the window 8 will disappear from the display area 20, to make room for the marking "17" of the upper ring "4".
  • the lower ring 6 which will present its thinned tooth 16 in front of the drive wheel 18.
  • the height of the thinned tooth 16 is such that the drive wheel 18 can not meshing with this tooth 16 and drives only the date ring 4.
  • FIG. 5 is an exploded view of the movement 1 provided with the mechanism date according to the invention.
  • This movement 1 comprises a plate 32 which supports and guides in rotation the two lower date rings 6 and higher.
  • center of platinum 32 stands classically the axis of the hour wheel 34 on which is engaged the hour wheel 36.
  • a bridge 38 carries the locking device 22 equipped with its two jumpers 24 and 26 which act respectively on the ring of upper date 4 and the lower date ring 6.
  • the wheel 18 includes a wheel 40 driven, via a mobile gear reducer not shown, by the hour wheel 34 so as to perform a complete turn in twenty-four hours.
  • Two fingers 42 and 44 are fixed, for example by welding, on the wheel 40. These two fingers 42 and 44 drive the date rings, respectively upper 4 and lower 6, by action on teeth 10 or 12 of these rings.
  • the thinned tooth 14 of the upper date ring 4 is located opposite of the drive wheel 18, it will have no effect on said upper ring 4 and will train only by its finger 44 the lower date ring 6 of a step every day. Conversely, if the thinned tooth 16 of the lower date ring 6 is next to the drive wheel 18, the finger 44 can not come into engagement with this tooth 16 of said lower ring 6, and only the upper ring 4 will advance one step each day.
  • the drive wheel 18 is mounted freely on an axis 46 of the bridge 38.
  • the date mechanism according to the invention is held axially on the plate 32 by means of a holding plate 48 fixed with screws 50.
  • FIG. 6 is a developed representation of the teeth of the rings of upper 4 and lower 6.
  • the upper date ring 4 has sixteen teeth identified by the numbers 1,2, ...., 15 and 16, while the lower date ring 6 comprises seventeen teeth identified by the numbers 1, 2, ..., 16 and 17.
  • the upper ring 4 comprises therefore 16 divisions, while the lower ring 6 has 17 divisions.
  • Teeth 10 and 12 rings respectively upper 4 and lower 6 are therefore shifted one against the other.
  • the positions of the thinned teeth 14 and 16 of the rings upper 4 and lower 6 are marked with circles in solid lines.
  • the position of the drive wheel 18 vis-à-vis the teeth of the upper 4 and lower rings 6 is marked by the line segment A-A.
  • the two jumpers 24 and 26 are materialized by two rectangles bearing the same numerical references. As can be seen from the drawing, the height of the two jumpers 24 and 26 is equal to the thickness of the teeth 10 and 12.
  • the upper date ring 4 has its thinned tooth 14 next to the drive wheel 18.
  • This position corresponds to the situation in which the upper ring 4 has its window 8 to the display place 20 of the movement and reveals the number "16" carried by the ring lower (see also Figure 4).
  • the stop 30 of the lower date ring 6 abuts against the stop 28 of the upper ring 4.
  • the upper ring 4 will also be driven. It will be then the lower ring 6 which will present its thinned tooth 16 next to the wheel 18, while the thinned tooth 14 of the upper ring 4 will have advanced one step.
  • the height of the two jumpers 24 and 26 is substantially equal to the thickness of the teeth 10 and 12, so that even during passage of the thinned tooth, respectively 14 or 16, said jumpers always remain engaged between two teeth immediately consecutive teeth of the disks upper and lower, ensuring proper positioning of these discs.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
EP03027147A 2003-11-26 2003-11-26 Kalendermechanismus für eine Uhr mit zwei übereinliegenden Ringen Expired - Lifetime EP1536300B1 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP03027147A EP1536300B1 (de) 2003-11-26 2003-11-26 Kalendermechanismus für eine Uhr mit zwei übereinliegenden Ringen
SG200407199A SG112095A1 (en) 2003-11-26 2004-11-12 Timepiece with a date mechanism comprising two superposed date rings
TW093135280A TW200519554A (en) 2003-11-26 2004-11-17 Timepiece with a date mechanism comprising two superposed date rings
KR1020040093756A KR101093184B1 (ko) 2003-11-26 2004-11-17 중첩된 두개의 날짜 링으로 구성된 날짜 장치를 가진 시계
US10/991,489 US6934221B2 (en) 2003-11-26 2004-11-19 Timepiece with a date mechanism comprising two superposed date rings
CN2004100917318A CN1621974B (zh) 2003-11-26 2004-11-25 具有包含两个叠置日历环的日历机构的钟表
JP2004341920A JP4537183B2 (ja) 2003-11-26 2004-11-26 重ね合わされた２つの日付リングを備える日付機構を有する時計
HK05109891.6A HK1077884A1 (en) 2003-11-26 2005-11-07 Timepiece with a date mechanism comprising two superposed date rings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03027147A EP1536300B1 (de) 2003-11-26 2003-11-26 Kalendermechanismus für eine Uhr mit zwei übereinliegenden Ringen

Publications (2)

Publication Number Publication Date
EP1536300A1 true EP1536300A1 (de) 2005-06-01
EP1536300B1 EP1536300B1 (de) 2011-06-08

Family

ID=34442881

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03027147A Expired - Lifetime EP1536300B1 (de) 2003-11-26 2003-11-26 Kalendermechanismus für eine Uhr mit zwei übereinliegenden Ringen

Country Status (8)

Country Link
US (1) US6934221B2 (de)
EP (1) EP1536300B1 (de)
JP (1) JP4537183B2 (de)
KR (1) KR101093184B1 (de)
CN (1) CN1621974B (de)
HK (1) HK1077884A1 (de)
SG (1) SG112095A1 (de)
TW (1) TW200519554A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1868048A1 (de) * 2005-03-30 2007-12-19 Citizen Holdings Co., Ltd. Anzeigeeinrichtung und kalendereinrichtung einer uhr
EP2835697A1 (de) * 2013-08-05 2015-02-11 ETA SA Manufacture Horlogère Suisse Vorrichtung zur Anzeige einer Datumsanzeige
EP3040784A1 (de) * 2014-12-30 2016-07-06 ETA SA Manufacture Horlogère Suisse Datumsanzeigevorrichtung für eine Uhr

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7120091B1 (en) * 2005-08-25 2006-10-10 Timex Group B.V. Electronic device with calendar function
US7423936B2 (en) * 2005-09-07 2008-09-09 Timex Group B.V. Electronic device with scheduled occurrence indicators
EP1906269B1 (de) * 2006-09-26 2009-07-15 ETA SA Manufacture Horlogère Suisse Uhrwerk, das eine Halteplatte für einen Anzeigering umfasst
EP2141556B1 (de) * 2008-07-03 2012-06-27 ETA SA Manufacture Horlogère Suisse Jahreskalendermechanismus für Uhrwerk
US7859950B2 (en) * 2008-08-11 2010-12-28 Blancpain S.A. Large date calendar day mechanism for a timepiece
EP2985660B1 (de) * 2014-08-14 2019-05-22 Montres Tudor S.A. Uhranzeigevorrichtung einer Uhrzeitanzeige oder eines abgeleiteten Uhrzeitwerts
EP3040788B1 (de) * 2014-12-30 2017-08-09 ETA SA Manufacture Horlogère Suisse Kupplungsmechanismus für die Ziffernscheiben einer Datumsanzeige
CN108227454B (zh) * 2016-12-22 2023-05-26 天津海鸥表业集团有限公司 一种钟表的双层日历机构
CN113093503B (zh) * 2020-01-08 2024-01-05 精工爱普生株式会社 机芯和钟表

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB957031A (en) * 1962-01-13 1964-05-06 Karl Diehl Dipl Ing Clock with date indicator
CH660941GA3 (en) * 1985-06-11 1987-06-30 Fred Murten Bandi Counting and display device with window, especially for wrist watch or other timepiece calendar, with analogue display
DE19845539A1 (de) * 1998-10-02 2000-04-06 Fortis Ag Grenchen Armbanduhr mit einer Großdatumsanzeige und Verwendung eines Uhrwerks für eine Armbanduhr zur Ausbildung einer Großdatumsanzeige

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH624534GA3 (de) * 1979-04-04 1981-08-14
TW493113B (en) * 2000-08-23 2002-07-01 Ebauchesfabrik Eta Ag Electronic watch with a large date aperture
SG102647A1 (en) * 2000-12-22 2004-03-26 Ebauchesfabrik Eta Ag Timepiece provided with a date having a large aperture
DE01811165T1 (de) * 2001-11-30 2004-03-11 Rolex Sa Kalendermechanismus für eine Uhr
JP4451634B2 (ja) * 2003-10-31 2010-04-14 シチズンホールディングス株式会社 カレンダー機構

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB957031A (en) * 1962-01-13 1964-05-06 Karl Diehl Dipl Ing Clock with date indicator
CH660941GA3 (en) * 1985-06-11 1987-06-30 Fred Murten Bandi Counting and display device with window, especially for wrist watch or other timepiece calendar, with analogue display
DE19845539A1 (de) * 1998-10-02 2000-04-06 Fortis Ag Grenchen Armbanduhr mit einer Großdatumsanzeige und Verwendung eines Uhrwerks für eine Armbanduhr zur Ausbildung einer Großdatumsanzeige

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1868048A1 (de) * 2005-03-30 2007-12-19 Citizen Holdings Co., Ltd. Anzeigeeinrichtung und kalendereinrichtung einer uhr
EP1868048A4 (de) * 2005-03-30 2009-12-23 Citizen Holdings Co Ltd Anzeigeeinrichtung und kalendereinrichtung einer uhr
US7738324B2 (en) 2005-03-30 2010-06-15 Citizen Holdings Co., Ltd. Display device and timepiece calendar device
EP2835697A1 (de) * 2013-08-05 2015-02-11 ETA SA Manufacture Horlogère Suisse Vorrichtung zur Anzeige einer Datumsanzeige
US8995234B2 (en) 2013-08-05 2015-03-31 Eta Sa Manufacture Horlogere Suisse Date indication display device
EP3040784A1 (de) * 2014-12-30 2016-07-06 ETA SA Manufacture Horlogère Suisse Datumsanzeigevorrichtung für eine Uhr
CN105741674A (zh) * 2014-12-30 2016-07-06 Eta瑞士钟表制造股份有限公司 用于钟表的日历显示装置
US9547279B2 (en) 2014-12-30 2017-01-17 Eta Sa Manufacture Horlogère Suisse Calendar display device for a timepiece
CN105741674B (zh) * 2014-12-30 2018-01-16 Eta瑞士钟表制造股份有限公司 用于钟表的日历显示装置

Also Published As

Publication number Publication date
JP2005156563A (ja) 2005-06-16
EP1536300B1 (de) 2011-06-08
JP4537183B2 (ja) 2010-09-01
HK1077884A1 (en) 2006-02-24
KR101093184B1 (ko) 2011-12-13
CN1621974B (zh) 2013-03-27
TW200519554A (en) 2005-06-16
SG112095A1 (en) 2005-06-29
US20050111302A1 (en) 2005-05-26
CN1621974A (zh) 2005-06-01
US6934221B2 (en) 2005-08-23
KR20050050538A (ko) 2005-05-31

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