BE456214A - - Google Patents

Info

Publication number
BE456214A
BE456214A BE456214DA BE456214A BE 456214 A BE456214 A BE 456214A BE 456214D A BE456214D A BE 456214DA BE 456214 A BE456214 A BE 456214A
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 BE456214A publication Critical patent/BE456214A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
    • H04Q1/4465—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency the same frequency being used for all signalling information, e.g. A.C. nr.9 system

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
BE456214D 1943-03-04 BE456214A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH903678X 1943-03-04

Publications (1)

Publication Number Publication Date
BE456214A true BE456214A (fr)

Family

ID=4546750

Family Applications (1)

Application Number Title Priority Date Filing Date
BE456214D BE456214A (fr) 1943-03-04

Country Status (3)

Country Link
BE (1) BE456214A (fr)
CH (1) CH232244A (fr)
FR (1) FR903678A (fr)

Also Published As

Publication number Publication date
FR903678A (fr) 1945-10-11
CH232244A (de) 1944-05-15

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