BE437367A - - Google Patents

Info

Publication number
BE437367A
BE437367A BE437367DA BE437367A BE 437367 A BE437367 A BE 437367A BE 437367D A BE437367D A BE 437367DA BE 437367 A BE437367 A BE 437367A
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 BE437367A publication Critical patent/BE437367A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/40—Applications of speech amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
BE437367D 1938-12-14 BE437367A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB233307X 1938-12-14

Publications (1)

Publication Number Publication Date
BE437367A true BE437367A (enrdf_load_stackoverflow)

Family

ID=10193869

Family Applications (1)

Application Number Title Priority Date Filing Date
BE437367D BE437367A (enrdf_load_stackoverflow) 1938-12-14

Country Status (4)

Country Link
BE (1) BE437367A (enrdf_load_stackoverflow)
CH (1) CH233307A (enrdf_load_stackoverflow)
FR (1) FR862315A (enrdf_load_stackoverflow)
NL (1) NL61476C (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
CH233307A (fr) 1944-07-15
NL61476C (enrdf_load_stackoverflow)
FR862315A (fr) 1941-03-04

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