FR764691A - Improvements to fire alarms - Google Patents

Improvements to fire alarms

Info

Publication number
FR764691A
FR764691A FR764691DA FR764691A FR 764691 A FR764691 A FR 764691A FR 764691D A FR764691D A FR 764691DA FR 764691 A FR764691 A FR 764691A
Authority
FR
France
Prior art keywords
fire alarms
alarms
fire
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
Other languages
French (fr)
Inventor
Ekman
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 filed Critical
Application granted granted Critical
Publication of FR764691A publication Critical patent/FR764691A/en
Expired legal-status Critical Current

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

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
  • Fire Alarms (AREA)
FR764691D 1932-12-01 1933-11-30 Improvements to fire alarms Expired FR764691A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE409617X 1932-12-01

Publications (1)

Publication Number Publication Date
FR764691A true FR764691A (en) 1934-05-25

Family

ID=20309539

Family Applications (1)

Application Number Title Priority Date Filing Date
FR764691D Expired FR764691A (en) 1932-12-01 1933-11-30 Improvements to fire alarms

Country Status (3)

Country Link
DE (1) DE655627C (en)
FR (1) FR764691A (en)
GB (1) GB409617A (en)

Also Published As

Publication number Publication date
DE655627C (en) 1938-01-20
GB409617A (en) 1934-05-03

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