FR799296A - Installation acoustique d'alarme - Google Patents

Installation acoustique d'alarme

Info

Publication number: FR799296A
Authority: FR; France
Prior art keywords: acoustic alarm; alarm installation; installation; acoustic; alarm
Prior art date: 1935-03-12
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.)

Julius Pintsch AG

Original Assignee

Julius Pintsch AG

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.)

1935-03-12

Filing date

1935-12-13

Publication date

1936-06-10

1935-12-13 Application filed by Julius Pintsch AG filed Critical Julius Pintsch AG

1936-06-10 Application granted granted Critical

1936-06-10 Publication of FR799296A publication Critical patent/FR799296A/fr

Status Expired legal-status Critical Current

Classifications

- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission

Landscapes

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

FR799296D 1935-03-12 1935-12-13 Installation acoustique d'alarme Expired FR799296A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE799296X		1935-03-12

Publications (1)

Publication Number	Publication Date
FR799296A true FR799296A (fr)	1936-06-10

Family

ID=6711587

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR799296D Expired FR799296A (fr)	1935-03-12	1935-12-13	Installation acoustique d'alarme

Country Status (1)

Country	Link
FR (1)	FR799296A (fr)

1935
- 1935-12-13 FR FR799296D patent/FR799296A/fr not_active Expired

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