FR531334A - Appareil avertisseur - Google Patents

Appareil avertisseur

Info

Publication number
FR531334A
FR531334A FR531334DA FR531334A FR 531334 A FR531334 A FR 531334A FR 531334D A FR531334D A FR 531334DA FR 531334 A FR531334 A FR 531334A
Authority
FR
France
Prior art keywords
warning device
warning
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
English (en)
Inventor
Francis Sefcik
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 FR531334A publication Critical patent/FR531334A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/20—Actuation by change of fluid pressure

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
FR531334D 1921-02-25 1921-02-25 Appareil avertisseur Expired FR531334A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR531334T 1921-02-25

Publications (1)

Publication Number Publication Date
FR531334A true FR531334A (fr) 1922-01-11

Family

ID=8923867

Family Applications (1)

Application Number Title Priority Date Filing Date
FR531334D Expired FR531334A (fr) 1921-02-25 1921-02-25 Appareil avertisseur

Country Status (1)

Country Link
FR (1) FR531334A (fr)

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