FR948012A - Dispositif de protection contre le vol - Google Patents

Dispositif de protection contre le vol

Info

Publication number: FR948012A
Authority: FR; France
Prior art keywords: protection device; theft protection; theft; protection
Prior art date: 1947-05-27
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

Lucien Lamarche

Gabriel Lenoir

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.)

1947-05-27

Filing date

1947-05-27

Publication date

1949-07-20

1947-05-27 Application filed filed Critical

1949-07-20 Application granted granted Critical

1949-07-20 Publication of FR948012A publication Critical patent/FR948012A/fr

Status Expired legal-status Critical Current

Classifications

- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
- G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
- G08B13/183—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier

Landscapes

Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)

FR948012D 1947-05-27 1947-05-27 Dispositif de protection contre le vol Expired FR948012A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR948012T		1947-05-27

Publications (1)

Publication Number	Publication Date
FR948012A true FR948012A (fr)	1949-07-20

Family

ID=9473745

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR948012D Expired FR948012A (fr)	1947-05-27	1947-05-27	Dispositif de protection contre le vol

Country Status (1)

Country	Link
FR (1)	FR948012A (fr)

1947
- 1947-05-27 FR FR948012D patent/FR948012A/fr not_active Expired

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