BE379502A - - Google Patents

Info

Publication number
BE379502A
BE379502A BE379502DA BE379502A BE 379502 A BE379502 A BE 379502A BE 379502D A BE379502D A BE 379502DA BE 379502 A BE379502 A BE 379502A
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.)
Filing date
Publication date
Application filed filed Critical
Publication of BE379502A publication Critical patent/BE379502A/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)
  • Telephonic Communication Services (AREA)
BE379502D 1931-04-07 1931-05-01 BE379502A (enrdf_load_stackoverflow)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR714908T 1931-04-07
GB10530/31A GB372066A (en) 1931-04-07 1931-04-09 Improvements in telephone systems
BE379502T 1931-05-01

Publications (1)

Publication Number Publication Date
BE379502A true BE379502A (enrdf_load_stackoverflow) 1931-06-30

Family

ID=40498641

Family Applications (1)

Application Number Title Priority Date Filing Date
BE379502D BE379502A (enrdf_load_stackoverflow) 1931-04-07 1931-05-01

Country Status (3)

Country Link
BE (1) BE379502A (enrdf_load_stackoverflow)
FR (1) FR714908A (enrdf_load_stackoverflow)
GB (1) GB372066A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
FR714908A (fr) 1931-11-23
GB372066A (en) 1932-05-05

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