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)
• Interface Circuits In Exchanges (AREA)
• Fire Alarms (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=26248048

Family Applications (1)

Country Status (5)

Families Citing this family (1)

• 0
  • BE BE468184D patent/BE468184A/xx unknown
• 1942
  • 1942-04-30 GB GB5819/42A patent/GB557077A/en not_active Expired
  • 1942-09-11 GB GB12842/42A patent/GB560007A/en not_active Expired
  • 1942-12-11 US US468625A patent/US2367258A/en not_active Expired - Lifetime
• 1945
  • 1945-07-24 CH CH254967D patent/CH254967A/de unknown
• 1946
  • 1946-08-13 FR FR932231D patent/FR932231A/fr not_active Expired

Also Published As

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