FR2325996B1 - - Google Patents
Info
- Publication number
- FR2325996B1 FR2325996B1 FR7529489A FR7529489A FR2325996B1 FR 2325996 B1 FR2325996 B1 FR 2325996B1 FR 7529489 A FR7529489 A FR 7529489A FR 7529489 A FR7529489 A FR 7529489A FR 2325996 B1 FR2325996 B1 FR 2325996B1
- 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
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR 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
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/02—Monitoring continuously signalling or alarm systems
- G08B29/04—Monitoring of the detection circuits
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Security & Cryptography (AREA)
- Multimedia (AREA)
- Control Of Amplification And Gain Control (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7529489A FR2325996A1 (fr) | 1975-09-26 | 1975-09-26 | Systeme de controle automatique de sensibilite pour materiels de protection antivol du type volumetrique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7529489A FR2325996A1 (fr) | 1975-09-26 | 1975-09-26 | Systeme de controle automatique de sensibilite pour materiels de protection antivol du type volumetrique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2325996A1 FR2325996A1 (fr) | 1977-04-22 |
| FR2325996B1 true FR2325996B1 (US08177716-20120515-C00003.png) | 1979-07-13 |
Family
ID=9160474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7529489A Granted FR2325996A1 (fr) | 1975-09-26 | 1975-09-26 | Systeme de controle automatique de sensibilite pour materiels de protection antivol du type volumetrique |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2325996A1 (US08177716-20120515-C00003.png) |
-
1975
- 1975-09-26 FR FR7529489A patent/FR2325996A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2325996A1 (fr) | 1977-04-22 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |