FR923059A - Dispositif d'alarme - Google Patents

Dispositif d'alarme

Info

Publication number: FR923059A
Authority: FR; France
Prior art keywords: alarm device; alarm
Prior art date: 1945-11-20
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

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

FRILI AB

Original Assignee

FRILI AB

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.)

1945-11-20

Filing date

1946-03-01

Publication date

1947-06-26

1946-03-01 Application filed by FRILI AB filed Critical FRILI AB

1947-06-26 Application granted granted Critical

1947-06-26 Publication of FR923059A publication Critical patent/FR923059A/fr

Status Expired legal-status Critical Current

Classifications

- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2491—Intrusion detection systems, i.e. where the body of an intruder causes the interference with the electromagnetic field

Landscapes

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

FR923059D 1945-11-20 1946-03-01 Dispositif d'alarme Expired FR923059A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DK923059X		1945-11-20

Publications (1)

Publication Number	Publication Date
FR923059A true FR923059A (fr)	1947-06-26

Family

ID=8154036

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR923059D Expired FR923059A (fr)	1945-11-20	1946-03-01	Dispositif d'alarme

Country Status (1)

Country	Link
FR (1)	FR923059A (fr)

1946
- 1946-03-01 FR FR923059D patent/FR923059A/fr not_active Expired

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