CH557626A - Telefonteilnehmer-apparat mit elektronischem uebertragungsstromkreis. - Google Patents

Telefonteilnehmer-apparat mit elektronischem uebertragungsstromkreis.

Info

Publication number: CH557626A
Authority: CH; Switzerland
Prior art keywords: transmission circuit; electronic transmission; telephone subscriber; subscriber apparatus; telephone
Prior art date: 1971-12-09

Application number

CH1787872A

Other languages

German (de)

English (en)

Original Assignee

Int Standard Electric Corp

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.)

1971-12-09

Filing date

1972-12-08

Publication date

1974-12-31

1972-12-08 Application filed by Int Standard Electric Corp filed Critical Int Standard Electric Corp

1974-12-31 Publication of CH557626A publication Critical patent/CH557626A/xx

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/58—Anti-side-tone circuits
- H04M1/585—Anti-side-tone circuits implemented without inductive element

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Amplifiers (AREA)
Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

CH1787872A 1971-12-09 1972-12-08 Telefonteilnehmer-apparat mit elektronischem uebertragungsstromkreis. CH557626A (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB5719671		1971-12-09

Publications (1)

Publication Number	Publication Date
CH557626A true CH557626A (de)	1974-12-31

Family

ID=10478595

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CH1787872A CH557626A (de)	1971-12-09	1972-12-08	Telefonteilnehmer-apparat mit elektronischem uebertragungsstromkreis.

Country Status (11)

Country	Link
US (1)	US3823272A (xx)
AU (1)	AU473401B2 (xx)
BE (1)	BE792329A (xx)
CA (1)	CA972887A (xx)
CH (1)	CH557626A (xx)
DE (1)	DE2259993A1 (xx)
ES (1)	ES409421A1 (xx)
FR (1)	FR2164377A5 (xx)
GB (1)	GB1328917A (xx)
IE (1)	IE37045B1 (xx)
ZA (1)	ZA727502B (xx)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB1406663A (en) *	1972-08-22	1975-09-17	Standard Telephones Cables Ltd	Telphone subset circuits
NL7307296A (xx) *	1973-05-25	1974-11-27
US4031331A (en) *	1976-01-15	1977-06-21	Northern Electric Company Limited	Telephone speech network
BE841105A (nl) *	1976-04-26	1976-10-26		Telekommunikatie toestel
JPS5356903A (en) *	1976-11-02	1978-05-23	Nippon Telegr & Teleph Corp <Ntt>	Automatic level control circuit for telephone set
GB1546046A (en) *	1976-12-03	1979-05-16	Cselt Centro Studi Lab Telecom	Transmitting and receiving circuit for subscriber telephone sets
US4071713A (en) *	1976-12-27	1978-01-31	Northern Telecom Limited	Telephone speech network
JPS53105105A (en) *	1977-02-24	1978-09-13	San Terehon Kk	Semiconductor telephone set
US4303805A (en) *	1979-05-21	1981-12-01	United Networks, Inc.	Subscriber station network
US4400589A (en) *	1979-05-21	1983-08-23	United Networks, Inc.	Subscriber station network
US4326109A (en) *	1980-04-11	1982-04-20	Northern Telecom Limited	Apparatus for coupling a two-way transmission path to a one-way transmitting path and a one-way receiving path
DE3014187C2 (de) *	1980-04-14	1983-11-17	Nixdorf Computer Ag, 4790 Paderborn	Schaltungsanordnung zum zweidrähtigen Anschluß eines Fernsprechteilnehmers an je eine Leitung für angehende und ankommende Signale
DE3019835C2 (de) *	1980-05-23	1983-12-01	Siemens AG, 1000 Berlin und 8000 München	Übertragerfreie Gabelschaltung
GB8317706D0 (en) *	1983-06-29	1983-08-03	Standard Telephones Cables Ltd	Telephone subsets

0
- BE BE792329D patent/BE792329A/xx not_active IP Right Cessation
1971
- 1971-12-09 GB GB5719671A patent/GB1328917A/en not_active Expired
1972
- 1972-10-19 IE IE1420/72A patent/IE37045B1/xx unknown
- 1972-10-23 ZA ZA727502A patent/ZA727502B/xx unknown
- 1972-11-21 US US00308799A patent/US3823272A/en not_active Expired - Lifetime
- 1972-11-23 AU AU49190/72A patent/AU473401B2/en not_active Expired
- 1972-12-01 CA CA158,410A patent/CA972887A/en not_active Expired
- 1972-12-07 DE DE2259993A patent/DE2259993A1/de active Pending
- 1972-12-07 ES ES409421A patent/ES409421A1/es not_active Expired
- 1972-12-08 CH CH1787872A patent/CH557626A/xx not_active IP Right Cessation
- 1972-12-08 FR FR7243689A patent/FR2164377A5/fr not_active Expired

Also Published As

Publication number	Publication date
DE2259993A1 (de)	1973-06-14
AU4919072A (en)	1974-05-23
FR2164377A5 (xx)	1973-07-27
ES409421A1 (es)	1975-12-16
IE37045L (en)	1973-06-09
GB1328917A (en)	1973-09-05
CA972887A (en)	1975-08-12
IE37045B1 (en)	1977-04-27
AU473401B2 (en)	1976-06-24
BE792329A (fr)	1973-06-06
ZA727502B (en)	1973-07-25
US3823272A (en)	1974-07-09

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Legal Events

Date	Code	Title	Description
1986-08-29	PL	Patent ceased