BE738419A - - Google Patents
Info
- Publication number
- BE738419A BE738419A BE738419DA BE738419A BE 738419 A BE738419 A BE 738419A BE 738419D A BE738419D A BE 738419DA BE 738419 A BE738419 A BE 738419A
- Authority
- BE
- Belgium
Links
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)
- Alarm Systems (AREA)
- Burglar Alarm Systems (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US75722868A | 1968-09-04 | 1968-09-04 | |
| US83782769A | 1969-06-30 | 1969-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE738419A true BE738419A (fr) | 1970-03-04 |
Family
ID=27116352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE738419D BE738419A (fr) | 1968-09-04 | 1969-09-04 |
Country Status (7)
| Country | Link |
|---|---|
| BE (1) | BE738419A (fr) |
| CH (1) | CH519759A (fr) |
| DK (1) | DK122022B (fr) |
| FR (1) | FR2022151A1 (fr) |
| GB (1) | GB1275604A (fr) |
| NL (1) | NL149929B (fr) |
| SE (1) | SE341731B (fr) |
-
1969
- 1969-08-26 GB GB4254869A patent/GB1275604A/en not_active Expired
- 1969-09-03 NL NL6913457A patent/NL149929B/xx unknown
- 1969-09-03 FR FR6930052A patent/FR2022151A1/fr not_active Withdrawn
- 1969-09-03 DK DK471969A patent/DK122022B/da unknown
- 1969-09-03 SE SE1220269A patent/SE341731B/xx unknown
- 1969-09-04 BE BE738419D patent/BE738419A/xx unknown
- 1969-09-04 CH CH1340869A patent/CH519759A/fr not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DK122022B (da) | 1972-01-03 |
| GB1275604A (en) | 1972-05-24 |
| SE341731B (fr) | 1972-01-10 |
| DE1944546B2 (de) | 1975-10-23 |
| NL149929B (nl) | 1976-06-15 |
| DE1944546A1 (de) | 1970-09-24 |
| CH519759A (fr) | 1972-02-29 |
| NL6913457A (fr) | 1970-03-06 |
| FR2022151A1 (fr) | 1970-07-31 |