CA976287A - Postes telephoniques avec emission par microphone avec amplificateur et reception par haut-parleur - Google Patents

Postes telephoniques avec emission par microphone avec amplificateur et reception par haut-parleur

Info

Publication number
CA976287A
CA976287A CA119,595A CA119595A CA976287A CA 976287 A CA976287 A CA 976287A CA 119595 A CA119595 A CA 119595A CA 976287 A CA976287 A CA 976287A
Authority
CA
Canada
Prior art keywords
avec
par
telephoniques
parleur
postes
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.)
Expired
Application number
CA119,595A
Other languages
English (en)
Other versions
CA119595S (en
Inventor
Albert Barok
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of CA976287A publication Critical patent/CA976287A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
CA119,595A 1970-08-06 1971-07-30 Postes telephoniques avec emission par microphone avec amplificateur et reception par haut-parleur Expired CA976287A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
CA976287A true CA976287A (en) 1975-10-14

Family

ID=9060098

Family Applications (1)

Application Number Title Priority Date Filing Date
CA119,595A Expired CA976287A (en) 1970-08-06 1971-07-30 Postes telephoniques avec emission par microphone avec amplificateur et reception par haut-parleur

Country Status (8)

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

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2314631A1 (fr) * 1975-06-11 1977-01-07 Jeumont Schneider Procede et dispositif d'elimination de l'effet local d'un poste telephonique
FR2376576A1 (fr) * 1976-12-31 1978-07-28 Girard J Philippe Perfectionnements aux postes telephoniques a mains libres
JPS5489403A (en) * 1977-12-27 1979-07-16 Matsushita Electric Ind Co Ltd Signal control circuit
DE3213968C2 (de) * 1982-04-16 1984-06-14 Deutsche Fernsprecher Gesellschaft Mbh Marburg, 3550 Marburg Fernsprechapparat
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
FI78373C (fi) * 1988-01-18 1989-07-10 Sostel Oy Telefontrafik- eller dataoeverfoeringssystem.
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
NL125146C (es) * 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

Also Published As

Publication number Publication date
GB1360227A (en) 1974-07-17
BE770227A (fr) 1971-12-01
DE2136313A1 (de) 1972-02-10
ES393619A1 (es) 1974-07-01
CH546524A (fr) 1974-02-28
FR2102614A5 (es) 1972-04-07
US3787621A (en) 1974-01-22

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