NL54631C - - Google Patents

Info

Publication number
NL54631C
NL54631C NL54631DA NL54631C NL 54631 C NL54631 C NL 54631C NL 54631D A NL54631D A NL 54631DA NL 54631 C NL54631 C NL 54631C
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 NL54631C publication Critical patent/NL54631C/xx

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/018—Sensor coding by detecting magnitude of an electrical parameter, e.g. resistance
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Alarm Devices (AREA)
NL54631D 1937-01-20 NL54631C (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE202679X 1937-01-20

Publications (1)

Publication Number Publication Date
NL54631C true NL54631C (enrdf_load_stackoverflow)

Family

ID=20304948

Family Applications (1)

Application Number Title Priority Date Filing Date
NL54631D NL54631C (enrdf_load_stackoverflow) 1937-01-20

Country Status (6)

Country Link
US (1) US2294043A (enrdf_load_stackoverflow)
BE (1) BE425857A (enrdf_load_stackoverflow)
CH (1) CH202679A (enrdf_load_stackoverflow)
DE (1) DE722085C (enrdf_load_stackoverflow)
FR (1) FR832277A (enrdf_load_stackoverflow)
NL (1) NL54631C (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1075019B (de) * 1960-02-04 Dragerwerk Hemr S. Bernh Drager Lübeck Elektrischer Fern Temperatur-Anzeiger fur Kraftfahrzeuge
US2636163A (en) * 1951-04-19 1953-04-21 Earle V Gardiner Burglar alarm system
US2696603A (en) * 1952-06-10 1954-12-07 Ekman Olof Ingemar Harald Two-wire alarm or control system
US3648268A (en) * 1969-11-03 1972-03-07 Melvin Paull Surveillance and alarm system

Also Published As

Publication number Publication date
US2294043A (en) 1942-08-25
CH202679A (de) 1939-01-31
BE425857A (enrdf_load_stackoverflow)
DE722085C (de) 1942-06-30
FR832277A (fr) 1938-09-23

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