BE378432A - - Google Patents

Info

Publication number
BE378432A
BE378432A BE378432DA BE378432A BE 378432 A BE378432 A BE 378432A BE 378432D A BE378432D A BE 378432DA BE 378432 A BE378432 A BE 378432A
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 BE378432A publication Critical patent/BE378432A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
BE378432D 1930-03-22 BE378432A (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH374973X 1930-03-22

Publications (1)

Publication Number Publication Date
BE378432A true BE378432A (zh)

Family

ID=4513540

Family Applications (1)

Application Number Title Priority Date Filing Date
BE378432D BE378432A (zh) 1930-03-22

Country Status (2)

Country Link
BE (1) BE378432A (zh)
GB (1) GB374973A (zh)

Also Published As

Publication number Publication date
GB374973A (en) 1932-06-23

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