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BE446464A - - Google Patents

Info

Publication number
BE446464A
BE446464A BE446464DA BE446464A BE 446464 A BE446464 A BE 446464A BE 446464D A BE446464D A BE 446464DA BE 446464 A BE446464 A BE 446464A
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 BE446464A publication Critical patent/BE446464A/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
    • H04Q1/442—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies
    • H04Q1/4423—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies using one signalling frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices For Supply Of Signal Current (AREA)
BE446464D 1942-07-09 1947-06-20 BE446464A (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB954042A GB554786A (en) 1942-07-09 1942-07-09 Electrical signal transmission system

Publications (1)

Publication Number Publication Date
BE446464A true BE446464A (no) 1948-04-17

Family

ID=9873964

Family Applications (1)

Application Number Title Priority Date Filing Date
BE446464D BE446464A (no) 1942-07-09 1947-06-20

Country Status (4)

Country Link
BE (1) BE446464A (no)
CH (1) CH233480A (no)
FR (1) FR882217A (no)
GB (1) GB554786A (no)

Also Published As

Publication number Publication date
GB554786A (en) 1943-07-19
CH233480A (de) 1944-07-31
FR882217A (fr) 1943-05-21

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