BE498982A - - Google Patents

Info

Publication number
BE498982A
BE498982A BE498982DA BE498982A BE 498982 A BE498982 A BE 498982A BE 498982D A BE498982D A BE 498982DA BE 498982 A BE498982 A BE 498982A
Authority
BE
Belgium
Application number
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.)
Publication of BE498982A publication Critical patent/BE498982A/xx

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
    • 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)
  • Amplifiers (AREA)
BE498982D 1951-01-09 BE498982A (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US205052A US2761011A (en) 1951-01-09 1951-01-09 Intercommunication system

Publications (1)

Publication Number Publication Date
BE498982A true BE498982A (sv)

Family

ID=22760581

Family Applications (1)

Application Number Title Priority Date Filing Date
BE498982D BE498982A (sv) 1951-01-09

Country Status (2)

Country Link
US (1) US2761011A (sv)
BE (1) BE498982A (sv)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2850569A (en) * 1953-09-07 1958-09-02 Defensor A G Electric arrangement for speech transmission in two directions

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2205142A (en) * 1937-02-03 1940-06-18 Holtzer Cabot Electric Co Loudspeaking telephone system
US2323307A (en) * 1940-07-01 1943-07-06 Webster Electric Co Inc Communication system
US2319680A (en) * 1940-12-02 1943-05-18 Hasenberg Werner Simultaneous transmitting and receiving system with electronic change-over device
US2347080A (en) * 1942-12-14 1944-04-18 Webster Electric Co Inc Communication system
US2515726A (en) * 1945-09-24 1950-07-18 Automatic Elect Lab Intercommunicating system
FR1004866A (fr) * 1948-01-26 1952-04-03 Perfectionnements aux installations téléphoniques à haut-parleur
US2545466A (en) * 1948-07-10 1951-03-20 Le Teleampliphone Soc Loud-speaker telephone installation
US2536820A (en) * 1948-09-17 1951-01-02 Prahm Louis Two-way communication system
US2623949A (en) * 1949-06-08 1952-12-30 Le Teleampliphone Soc Two-way loud-speaker telephone installation

Also Published As

Publication number Publication date
US2761011A (en) 1956-08-28

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