CH250532A - Arrangement in an intercom for noisy traffic. - Google Patents

Arrangement in an intercom for noisy traffic.

Info

Publication number
CH250532A
CH250532A CH250532DA CH250532A CH 250532 A CH250532 A CH 250532A CH 250532D A CH250532D A CH 250532DA CH 250532 A CH250532 A CH 250532A
Authority
CH
Switzerland
Prior art keywords
intercom
arrangement
noisy
traffic
noisy traffic
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Autophon
Original Assignee
Autophon Ag
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 Autophon Ag filed Critical Autophon Ag
Publication of CH250532A publication Critical patent/CH250532A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/001—Two-way communication systems between a limited number of parties

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
CH250532D 1944-10-21 1944-10-21 Arrangement in an intercom for noisy traffic. CH250532A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH599406X 1944-10-21

Publications (1)

Publication Number Publication Date
CH250532A true CH250532A (en) 1947-08-31

Family

ID=4522654

Family Applications (1)

Application Number Title Priority Date Filing Date
CH250532D CH250532A (en) 1944-10-21 1944-10-21 Arrangement in an intercom for noisy traffic.

Country Status (3)

Country Link
US (1) US2424069A (en)
CH (1) CH250532A (en)
GB (1) GB599406A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126448A (en) * 1964-03-24 Station
US2543807A (en) * 1946-03-28 1951-03-06 Atf Inc Voice operated relay
FR1005063A (en) * 1947-05-29 1952-04-07 Device to avoid the feedback effect in loudspeaker telephone systems
FR1005064A (en) * 1947-05-29 1952-04-07 Improvements to single-way loudspeaker telephone installations
US2694749A (en) * 1950-04-18 1954-11-16 Sepco 45 B D Sebastopol Communication system
US2802055A (en) * 1952-08-29 1957-08-06 Siemens Ag Two-way loudspeaker intercommunication system
US2883456A (en) * 1953-04-29 1959-04-21 Int Standard Electric Corp Circuit arrangement for intercommunication systems
US2819340A (en) * 1953-11-17 1958-01-07 Stanley S Brody Voice operated intercommunication system
US2951123A (en) * 1954-03-19 1960-08-30 Vito Michael Frank De Voice activated intercommunication system
US3189690A (en) * 1960-04-27 1965-06-15 Modern Telephones Great Britai Two-way telephone systems with talk-listen switching
US3897592A (en) * 1973-05-11 1975-07-29 Billy E Walker Voice-operated transmit system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR789510A (en) * 1933-12-30 1935-10-30 Le Telephone Prive Nat Improvements in telephony
GB522457A (en) * 1938-12-02 1940-06-18 Marcello Creti Improvements in or relating to systems of simultaneous telephony on a number of lines

Also Published As

Publication number Publication date
US2424069A (en) 1947-07-15
GB599406A (en) 1948-03-11

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