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 (xx)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
BE450536A true BE450536A (xx)

Family

ID=6846781

Family Applications (1)

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

Country Status (2)

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

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

Similar Documents

Publication Publication Date Title
BE445207A (xx)
BE445672A (xx)
BE446455A (xx)
BE446420A (xx)
BE446419A (xx)
BE446396A (xx)
BE444805A (xx)
BE444779A (xx)
BE444654A (xx)
BE449342A (xx)
BE450536A (xx)
BE444539A (xx)
BE446369A (xx)
BE444433A (xx)
BE466455A (xx)
BE446368A (xx)
BE446350A (xx)
BE443577A (xx)
BE442959A (xx)
BE446348A (xx)
BE446312A (xx)
BE446135A (xx)
BE446052A (xx)
NL129021B (xx)
BE446040A (xx)