FR760591A - - Google Patents

Info

Publication number
FR760591A
FR760591A FR760591DA FR760591A FR 760591 A FR760591 A FR 760591A FR 760591D A FR760591D A FR 760591DA FR 760591 A FR760591 A FR 760591A
Authority
FR
France
Legal status (The legal status 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 status listed.)
Expired
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 date
Application granted granted Critical
Publication of FR760591A publication Critical patent/FR760591A/fr
Expired legal-status Critical Current

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
FR760591D 1932-09-13 Expired FR760591A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US633006A US2047304A (en) 1932-09-13 1932-09-13 Signaling system

Publications (1)

Publication Number Publication Date
FR760591A true FR760591A (fr) 1934-02-26

Family

ID=24537891

Family Applications (1)

Application Number Title Priority Date Filing Date
FR760591D Expired FR760591A (fr) 1932-09-13

Country Status (2)

Country Link
US (1) US2047304A (fr)
FR (1) FR760591A (fr)

Also Published As

Publication number Publication date
US2047304A (en) 1936-07-14

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