BE464852A - - Google Patents

Info

Publication number
BE464852A
BE464852A BE464852DA BE464852A BE 464852 A BE464852 A BE 464852A BE 464852D A BE464852D A BE 464852DA BE 464852 A BE464852 A BE 464852A
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 BE464852A publication Critical patent/BE464852A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Amplifiers (AREA)
BE464852D 1939-08-14 BE464852A (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US290088A US2282404A (en) 1939-08-14 1939-08-14 Transmission system

Publications (1)

Publication Number Publication Date
BE464852A true BE464852A (xx)

Family

ID=23114484

Family Applications (1)

Application Number Title Priority Date Filing Date
BE464852D BE464852A (xx) 1939-08-14

Country Status (4)

Country Link
US (1) US2282404A (xx)
BE (1) BE464852A (xx)
FR (1) FR930807A (xx)
GB (1) GB541981A (xx)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2831922A (en) * 1953-05-06 1958-04-22 Gai Tronics Corp Telephone substation
US2850569A (en) * 1953-09-07 1958-09-02 Defensor A G Electric arrangement for speech transmission in two directions
US3060265A (en) * 1960-01-26 1962-10-23 Itt Conference call circuit

Also Published As

Publication number Publication date
GB541981A (en) 1941-12-19
US2282404A (en) 1942-05-12
FR930807A (fr) 1948-02-05

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