DE2136313A1 - - Google Patents

Info

Publication number
DE2136313A1
DE2136313A1 DE19712136313 DE2136313A DE2136313A1 DE 2136313 A1 DE2136313 A1 DE 2136313A1 DE 19712136313 DE19712136313 DE 19712136313 DE 2136313 A DE2136313 A DE 2136313A DE 2136313 A1 DE2136313 A1 DE 2136313A1
Authority
DE
Germany
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.)
Pending
Application number
DE19712136313
Original Assignee
Barok A
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
Priority to FR7029610A priority Critical patent/FR2102614A5/fr
Application filed by Barok A filed Critical Barok A
Publication of DE2136313A1 publication Critical patent/DE2136313A1/de
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M9/00Interconnection arrangements not involving centralised switching
    • H04M9/08Two-way loud-speaking telephone systems with means for suppressing echoes or otherwise conditioning for one or other direction of traffic
DE19712136313 1970-08-06 1971-07-20 Pending DE2136313A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7029610A FR2102614A5 (de) 1970-08-06 1970-08-06

Publications (1)

Publication Number Publication Date
DE2136313A1 true DE2136313A1 (de) 1972-02-10

Family

ID=9060098

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19712136313 Pending DE2136313A1 (de) 1970-08-06 1971-07-20

Country Status (8)

Country Link
US (1) US3787621A (de)
BE (1) BE770227A (de)
CA (1) CA976287A (de)
CH (1) CH546524A (de)
DE (1) DE2136313A1 (de)
ES (1) ES393619A1 (de)
FR (1) FR2102614A5 (de)
GB (1) GB1360227A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2626266A1 (de) * 1975-06-11 1976-12-23 Jeumont Schneider Verfahren und vorrichtung zur unterdrueckung des rueckhoerens einer fernsprechstelle
DE3213968A1 (de) * 1982-04-16 1983-11-03 Deutsche Fernsprecher Gmbh Fernsprechapparat
US4989236A (en) * 1988-01-18 1991-01-29 Sostel Oy Transmission system for telephone communications or data transfer

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2376576B1 (de) * 1976-12-31 1981-11-27 Girard J Philippe
JPS5751789B2 (de) * 1977-12-27 1982-11-04
US4715062A (en) * 1985-03-22 1987-12-22 Tie/Communications, Inc. Speakerphone control circuit having low gain states and method for controlling gain of speakerphone
US5020101A (en) * 1989-04-10 1991-05-28 Gregory R. Brotz Musicians telephone interface

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL245570A (de) * 1958-12-29
US3594507A (en) * 1969-10-22 1971-07-20 William T Clark Feedback eliminating device for audio amplifying systems
US3665106A (en) * 1970-04-28 1972-05-23 Research Corp Intercommunication system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2626266A1 (de) * 1975-06-11 1976-12-23 Jeumont Schneider Verfahren und vorrichtung zur unterdrueckung des rueckhoerens einer fernsprechstelle
DE3213968A1 (de) * 1982-04-16 1983-11-03 Deutsche Fernsprecher Gmbh Fernsprechapparat
US4989236A (en) * 1988-01-18 1991-01-29 Sostel Oy Transmission system for telephone communications or data transfer

Also Published As

Publication number Publication date
BE770227A (fr) 1971-12-01
CA976287A (en) 1975-10-14
CH546524A (fr) 1974-02-28
ES393619A1 (es) 1974-07-01
US3787621A (en) 1974-01-22
GB1360227A (en) 1974-07-17
BE770227A1 (de)
FR2102614A5 (de) 1972-04-07
CA976287A1 (de)

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