NL98373C - - Google Patents

Info

Publication number
NL98373C
NL98373C NL98373DA NL98373C NL 98373 C NL98373 C NL 98373C NL 98373D A NL98373D A NL 98373DA NL 98373 C NL98373 C NL 98373C
Authority
NL
Netherlands
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 NL98373C publication Critical patent/NL98373C/xx

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q1/00Details of selecting apparatus or arrangements
    • H04Q1/18Electrical details
    • H04Q1/30Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/442Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies
    • H04Q1/4423Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies using one signalling frequency
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Relay Circuits (AREA)
NL98373D 1959-03-25 NL98373C (en:Method)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL237529 1959-03-25

Publications (1)

Publication Number Publication Date
NL98373C true NL98373C (en:Method)

Family

ID=19751634

Family Applications (2)

Application Number Title Priority Date Filing Date
NL98373D NL98373C (en:Method) 1959-03-25
NL237529D NL237529A (en:Method) 1959-03-25

Family Applications After (1)

Application Number Title Priority Date Filing Date
NL237529D NL237529A (en:Method) 1959-03-25

Country Status (3)

Country Link
US (1) US3173064A (en:Method)
JP (1) JPS4012801B1 (en:Method)
NL (2) NL237529A (en:Method)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1909212A (en) * 1930-03-11 1933-05-16 Signal Engineering & Mfg Co Selective control circuit for alarm systems
US2512639A (en) * 1944-01-05 1950-06-27 Int Standard Electric Corp Control or signaling system

Also Published As

Publication number Publication date
US3173064A (en) 1965-03-09
JPS4012801B1 (en:Method) 1965-06-22
NL237529A (en:Method)

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