BE450536A - - Google Patents

Info

Publication number
BE450536A
BE450536A BE450536DA BE450536A BE 450536 A BE450536 A BE 450536A BE 450536D A BE450536D A BE 450536DA BE 450536 A BE450536 A BE 450536A
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 BE450536A publication Critical patent/BE450536A/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)
BE450536D 1942-04-18 BE450536A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE893502X 1942-04-18

Publications (1)

Publication Number Publication Date
BE450536A true BE450536A (enrdf_load_stackoverflow)

Family

ID=6846781

Family Applications (1)

Application Number Title Priority Date Filing Date
BE450536D BE450536A (enrdf_load_stackoverflow) 1942-04-18

Country Status (2)

Country Link
BE (1) BE450536A (enrdf_load_stackoverflow)
FR (1) FR893502A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE954519C (de) * 1951-12-13 1956-12-20 Standard Elek K Ag Schaltungsanordnung zum Empfang von Ruf- und Wahlzeichen
DE969686C (de) * 1952-05-09 1958-07-03 Felten & Guilleaume Gmbh Roehrenverstaerkerstufe zum gleichzeitigen Empfang und zur gemeinsamen Verstaerkung eines Frequenzbandes und einer ausserhalb desselben liegenden Signalfrequenz

Also Published As

Publication number Publication date
FR893502A (fr) 1944-07-30

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