FR1581720A - - Google Patents

Info

Publication number
FR1581720A
FR1581720A FR1581720DA FR1581720A FR 1581720 A FR1581720 A FR 1581720A FR 1581720D A FR1581720D A FR 1581720DA FR 1581720 A FR1581720 A FR 1581720A
Authority
FR
France
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
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 FR1581720A publication Critical patent/FR1581720A/fr
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR1581720D 1968-07-23 1968-07-23 Expired FR1581720A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR160278 1968-07-23

Publications (1)

Publication Number Publication Date
FR1581720A true FR1581720A (fr) 1969-09-19

Family

ID=8652940

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1581720D Expired FR1581720A (fr) 1968-07-23 1968-07-23

Country Status (1)

Country Link
FR (1) FR1581720A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0106827A2 (fr) * 1982-09-08 1984-04-25 Lienart van Lidth de Jeude, Roland Dispositif anti-oubli
WO1987003984A1 (fr) * 1985-12-17 1987-07-02 Franz Steppuhn Dispositif antivol pour objets plats

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0106827A2 (fr) * 1982-09-08 1984-04-25 Lienart van Lidth de Jeude, Roland Dispositif anti-oubli
EP0106827A3 (fr) * 1982-09-08 1987-05-20 Lienart van Lidth de Jeude, Roland Dispositif anti-oubli
WO1987003984A1 (fr) * 1985-12-17 1987-07-02 Franz Steppuhn Dispositif antivol pour objets plats

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Legal Events

Date Code Title Description
ST Notification of lapse