BE356540A - - Google Patents

Info

Publication number
BE356540A
BE356540A BE356540DA BE356540A BE 356540 A BE356540 A BE 356540A BE 356540D A BE356540D A BE 356540DA BE 356540 A BE356540 A BE 356540A
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 BE356540A publication Critical patent/BE356540A/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)
  • Interface Circuits In Exchanges (AREA)
BE356540D 1927-12-15 BE356540A (cg-RX-API-DMAC7.html)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1795494X 1927-12-15

Publications (1)

Publication Number Publication Date
BE356540A true BE356540A (cg-RX-API-DMAC7.html)

Family

ID=7743641

Family Applications (1)

Application Number Title Priority Date Filing Date
BE356540D BE356540A (cg-RX-API-DMAC7.html) 1927-12-15

Country Status (3)

Country Link
US (1) US1795494A (cg-RX-API-DMAC7.html)
BE (1) BE356540A (cg-RX-API-DMAC7.html)
FR (1) FR665579A (cg-RX-API-DMAC7.html)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2580709A (en) * 1947-11-14 1952-01-01 Automatic Elect Lab Toll switching telephone system having automatic amplifier insertion and gain setting

Also Published As

Publication number Publication date
FR665579A (fr) 1929-09-20
US1795494A (en) 1931-03-10

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