FR949138A - Dispositif anti-vol - Google Patents

Dispositif anti-vol

Info

Publication number: FR949138A
Authority: FR; France
Prior art keywords: theft device; theft
Prior art date: 1947-06-28
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

Inventor

Vladimir J Stepowski

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.)

1947-06-28

Filing date

1947-06-28

Publication date

1949-08-22

1947-06-28 Application filed filed Critical

1949-08-22 Application granted granted Critical

1949-08-22 Publication of FR949138A publication Critical patent/FR949138A/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
- G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
- G08B13/1654—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems
- G08B13/1672—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems using sonic detecting means, e.g. a microphone operating in the audio frequency range

Landscapes

Engineering & Computer Science (AREA)
Multimedia (AREA)
Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)

FR949138D 1947-06-28 1947-06-28 Dispositif anti-vol Expired FR949138A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR949138T		1947-06-28

Publications (1)

Publication Number	Publication Date
FR949138A true FR949138A (fr)	1949-08-22

Family

ID=9474392

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR949138D Expired FR949138A (fr)	1947-06-28	1947-06-28	Dispositif anti-vol

Country Status (1)

Country	Link
FR (1)	FR949138A (fr)

1947
- 1947-06-28 FR FR949138D patent/FR949138A/fr not_active Expired

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