FR860275A - Development of signal receiving devices - Google Patents

Development of signal receiving devices

Info

Publication number
FR860275A
FR860275A FR860275DA FR860275A FR 860275 A FR860275 A FR 860275A FR 860275D A FR860275D A FR 860275DA FR 860275 A FR860275 A FR 860275A
Authority
FR
France
Prior art keywords
development
signal receiving
receiving devices
devices
signal
Prior art date
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
Other languages
French (fr)
Inventor
Raoul Paresy
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
Application granted granted Critical
Publication of FR860275A publication Critical patent/FR860275A/en
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
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
    • H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
FR860275D 1939-09-16 1939-09-16 Development of signal receiving devices Expired FR860275A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR860275T 1939-09-16

Publications (1)

Publication Number Publication Date
FR860275A true FR860275A (en) 1941-01-10

Family

ID=9332598

Family Applications (1)

Application Number Title Priority Date Filing Date
FR860275D Expired FR860275A (en) 1939-09-16 1939-09-16 Development of signal receiving devices

Country Status (1)

Country Link
FR (1) FR860275A (en)

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