FR761245A - Means for obtaining the triggering of warning signals against theft by breaking or cutting surfaces and in particular windows or mirrors - Google Patents

Means for obtaining the triggering of warning signals against theft by breaking or cutting surfaces and in particular windows or mirrors

Info

Publication number
FR761245A
FR761245A FR761245DA FR761245A FR 761245 A FR761245 A FR 761245A FR 761245D A FR761245D A FR 761245DA FR 761245 A FR761245 A FR 761245A
Authority
FR
France
Prior art keywords
mirrors
triggering
breaking
obtaining
cutting surfaces
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
Alfred Bloch De Blottnitz
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 FR761245A publication Critical patent/FR761245A/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
    • G08B13/02—Mechanical actuation
    • G08B13/04—Mechanical actuation by breaking of glass
FR761245D 1933-07-19 1933-08-01 Means for obtaining the triggering of warning signals against theft by breaking or cutting surfaces and in particular windows or mirrors Expired FR761245A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE761245X 1933-07-19

Publications (1)

Publication Number Publication Date
FR761245A true FR761245A (en) 1934-03-14

Family

ID=3879901

Family Applications (1)

Application Number Title Priority Date Filing Date
FR761245D Expired FR761245A (en) 1933-07-19 1933-08-01 Means for obtaining the triggering of warning signals against theft by breaking or cutting surfaces and in particular windows or mirrors

Country Status (1)

Country Link
FR (1) FR761245A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4367460A (en) * 1979-10-17 1983-01-04 Henri Hodara Intrusion sensor using optic fiber

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4367460A (en) * 1979-10-17 1983-01-04 Henri Hodara Intrusion sensor using optic fiber

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