CH254967A - Electric signal system. - Google Patents

Electric signal system.

Info

Publication number
CH254967A
CH254967A CH254967DA CH254967A CH 254967 A CH254967 A CH 254967A CH 254967D A CH254967D A CH 254967DA CH 254967 A CH254967 A CH 254967A
Authority
CH
Switzerland
Prior art keywords
electric signal
signal system
electric
signal
Prior art date
Application number
Other languages
German (de)
Inventor
Ag Standard Telephon Und Radio
Original Assignee
Standard Telephon & Radio Ag
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.)
Filing date
Publication date
Application filed by Standard Telephon & Radio Ag filed Critical Standard Telephon & Radio Ag
Publication of CH254967A publication Critical patent/CH254967A/en

Links

Classifications

    • 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/02—Monitoring continuously signalling or alarm systems
    • G08B29/06—Monitoring of the line circuits, e.g. signalling of line faults

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Alarm Systems (AREA)
  • Fire Alarms (AREA)
  • Interface Circuits In Exchanges (AREA)
CH254967D 1942-04-30 1945-07-24 Electric signal system. CH254967A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB254967X 1942-04-30
GB110942X 1942-09-11

Publications (1)

Publication Number Publication Date
CH254967A true CH254967A (en) 1948-05-31

Family

ID=26248048

Family Applications (1)

Application Number Title Priority Date Filing Date
CH254967D CH254967A (en) 1942-04-30 1945-07-24 Electric signal system.

Country Status (5)

Country Link
US (1) US2367258A (en)
BE (1) BE468184A (en)
CH (1) CH254967A (en)
FR (1) FR932231A (en)
GB (2) GB557077A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE469337A (en) * 1945-10-19

Also Published As

Publication number Publication date
GB560007A (en) 1944-03-15
FR932231A (en) 1948-03-16
US2367258A (en) 1945-01-16
BE468184A (en)
GB557077A (en) 1943-11-03

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