CH614575A5 - Hands-free device for emergency telephones - Google Patents

Hands-free device for emergency telephones

Info

Publication number: CH614575A5
Authority: CH; Switzerland
Prior art keywords: hands; free device; emergency telephones; telephones; emergency
Prior art date: 1976-02-10

Application number

CH157877A

Inventor

Siegfried Wegner

Original Assignee

Elmeg

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.)

1976-02-10

Filing date

1977-02-09

Publication date

1979-11-30

1977-02-09 Application filed by Elmeg filed Critical Elmeg

1979-11-30 Publication of CH614575A5 publication Critical patent/CH614575A5/en

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/19—Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Mouthpieces or receivers specially adapted therefor

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Telephone Set Structure (AREA)
Telephone Function (AREA)

CH157877A 1976-02-10 1977-02-09 Hands-free device for emergency telephones CH614575A5 (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE2605086A DE2605086B2 (en)	1976-02-10	1976-02-10	Hands-free facility for emergency telephones

Publications (1)

Publication Number	Publication Date
CH614575A5 true CH614575A5 (en)	1979-11-30

Family

ID=5969454

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CH157877A CH614575A5 (en)	1976-02-10	1977-02-09	Hands-free device for emergency telephones

Country Status (7)

Country	Link
AT (1)	AT351607B (en)
CH (1)	CH614575A5 (en)
DE (1)	DE2605086B2 (en)
FR (1)	FR2341237A1 (en)
GB (1)	GB1567548A (en)
IT (1)	IT1077623B (en)
SE (1)	SE7701423L (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2218878A (en) *	1988-02-12	1989-11-22	Mars Inc	Telephone
GB2218302A (en) *	1988-05-07	1989-11-08	Crystalate Electronics	Hands-free telephone
GB2310559B (en) *	1996-02-23	2000-09-20	Nokia Mobile Phones Ltd	Audio output apparatus for a mobile communication device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE132355C (en) *
DE135160C (en) *
US2581251A (en) *	1949-08-09	1952-01-01	Bell Telephone Labor Inc	Telephone booth
US3144513A (en) *	1961-05-26	1964-08-11	Sherron Metallic Corp	Telephone booth
FR1429988A (en) *	1965-04-16	1966-02-25	Proburbel	Soundproof cabin
DE2245881A1 (en) *	1972-09-19	1974-03-28	Manfred Unger	INTERCOM SYSTEM FOR MOTORCYCLISTS FOR INSTALLATION IN FULL VISION HELMETS
DE7342649U (en) *	1973-11-30	1974-04-04	Neumann Elektronik Gmbh	Emergency telephone with swing door

1976
- 1976-02-10 DE DE2605086A patent/DE2605086B2/en not_active Withdrawn
1977
- 1977-02-07 AT AT78377A patent/AT351607B/en not_active IP Right Cessation
- 1977-02-09 SE SE7701423A patent/SE7701423L/en unknown
- 1977-02-09 IT IT20119/77A patent/IT1077623B/en active
- 1977-02-09 CH CH157877A patent/CH614575A5/en not_active IP Right Cessation
- 1977-02-10 GB GB5578/77A patent/GB1567548A/en not_active Expired
- 1977-02-10 FR FR7703796A patent/FR2341237A1/en not_active Withdrawn

Also Published As

Publication number	Publication date
DE2605086B2 (en)	1979-10-04
DE2605086A1 (en)	1977-08-11
ATA78377A (en)	1979-01-15
GB1567548A (en)	1980-05-14
FR2341237A1 (en)	1977-09-09
AT351607B (en)	1979-08-10
SE7701423L (en)	1977-08-11
IT1077623B (en)	1985-05-04

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Legal Events

Date	Code	Title	Description
1980-10-31	PL	Patent ceased
2024-10-31	PL	Patent ceased