FR984469A - Improvements to fire detectors - Google Patents

Improvements to fire detectors

Info

Publication number
FR984469A
FR984469A FR984469DA FR984469A FR 984469 A FR984469 A FR 984469A FR 984469D A FR984469D A FR 984469DA FR 984469 A FR984469 A FR 984469A
Authority
FR
France
Prior art keywords
fire detectors
detectors
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)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CIE FRANCAISE DU SIGNUM
Original Assignee
CIE FRANCAISE DU SIGNUM
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 CIE FRANCAISE DU SIGNUM filed Critical CIE FRANCAISE DU SIGNUM
Application granted granted Critical
Publication of FR984469A publication Critical patent/FR984469A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/242—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow operated by one particular pressure-time function

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
FR984469D 1943-09-30 1943-09-30 Improvements to fire detectors Expired FR984469A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR984469T 1943-09-30

Publications (1)

Publication Number Publication Date
FR984469A true FR984469A (en) 1951-07-06

Family

ID=9536734

Family Applications (1)

Application Number Title Priority Date Filing Date
FR984469D Expired FR984469A (en) 1943-09-30 1943-09-30 Improvements to fire detectors

Country Status (1)

Country Link
FR (1) FR984469A (en)

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