BE434364A - - Google Patents

Info

Publication number
BE434364A
BE434364A BE434364DA BE434364A BE 434364 A BE434364 A BE 434364A BE 434364D A BE434364D A BE 434364DA BE 434364 A BE434364 A BE 434364A
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 BE434364A publication Critical patent/BE434364A/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)
  • Mobile Radio Communication Systems (AREA)
  • Relay Circuits (AREA)
BE434364D 1938-05-16 BE434364A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE525676X 1938-05-16

Publications (1)

Publication Number Publication Date
BE434364A true BE434364A (fr)

Family

ID=6552697

Family Applications (1)

Application Number Title Priority Date Filing Date
BE434364D BE434364A (fr) 1938-05-16

Country Status (4)

Country Link
US (1) US2265203A (fr)
BE (1) BE434364A (fr)
FR (1) FR854758A (fr)
GB (1) GB525676A (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2489391A (en) * 1943-12-09 1949-11-29 Photoswitch Inc Thermally controlled electric relay
US2456427A (en) * 1944-11-28 1948-12-14 Gen Electric Protective system for electric motors
US2483408A (en) * 1945-03-26 1949-10-04 Standard Telephones Cables Ltd Relay circuit
US2516361A (en) * 1945-08-21 1950-07-25 Gen Railway Signal Co Voice frequency signal device
US2608608A (en) * 1946-01-29 1952-08-26 Ipsophon Patentgesellschaft A Electrical relay system
US2943588A (en) * 1946-04-22 1960-07-05 Martin G Sateren Control system for torpedo
FR961481A (fr) * 1947-02-21 1950-05-12
US2543309A (en) * 1947-10-15 1951-02-27 Andersson Ivan Means for automatically operating a number of electric relays or solenoids at a preset time
US2534895A (en) * 1948-02-28 1950-12-19 Westinghouse Electric Corp Auxiliary power system for aircraft
US2592825A (en) * 1948-09-03 1952-04-15 Gen Electric Co Ltd Frequency difference indicator
US2689279A (en) * 1949-09-21 1954-09-14 Maurice J Noregaard Electric switch
US2687500A (en) * 1949-12-06 1954-08-24 Westinghouse Electric Corp Circuit interrupter
US2706258A (en) * 1951-06-16 1955-04-12 Bell Telephone Labor Inc Voltage testing circuit
US2776383A (en) * 1952-04-21 1957-01-01 Robotron Corp Multi-function electronic timing circuit
US2773221A (en) * 1952-08-12 1956-12-04 Columbia Broadcasting Syst Inc Timing circuit
US3048660A (en) * 1958-07-31 1962-08-07 Bell Telephone Labor Inc Telephone pay station system
NL273286A (fr) * 1961-01-07
US3475561A (en) * 1965-09-29 1969-10-28 Superior Continental Corp Telephone carrier system having selfcontained independently attachable line tap units

Also Published As

Publication number Publication date
GB525676A (en) 1940-09-02
FR854758A (fr) 1940-04-24
US2265203A (en) 1941-12-09

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