FR719940A - Alarm signal - Google Patents

Alarm signal

Info

Publication number
FR719940A
FR719940A FR719940DA FR719940A FR 719940 A FR719940 A FR 719940A FR 719940D A FR719940D A FR 719940DA FR 719940 A FR719940 A FR 719940A
Authority
FR
France
Prior art keywords
alarm signal
alarm
signal
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
Edgar Honig
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 FR719940A publication Critical patent/FR719940A/en
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)
FR719940D 1930-07-10 1931-07-10 Alarm signal Expired FR719940A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE719940X 1930-07-10

Publications (1)

Publication Number Publication Date
FR719940A true FR719940A (en) 1932-02-12

Family

ID=6627322

Family Applications (1)

Application Number Title Priority Date Filing Date
FR719940D Expired FR719940A (en) 1930-07-10 1931-07-10 Alarm signal

Country Status (1)

Country Link
FR (1) FR719940A (en)

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