BE740274A - - Google Patents
Info
- Publication number
- BE740274A BE740274A BE740274DA BE740274A BE 740274 A BE740274 A BE 740274A BE 740274D A BE740274D A BE 740274DA BE 740274 A BE740274 A BE 740274A
- 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
- G08B13/1609—Actuation by interference with mechanical vibrations in air or other fluid using active vibration detection systems
- G08B13/1618—Actuation by interference with mechanical vibrations in air or other fluid using active vibration detection systems using ultrasonic detection means
- G08B13/1627—Actuation by interference with mechanical vibrations in air or other fluid using active vibration detection systems using ultrasonic detection means using Doppler shift detection circuits
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR170742 | 1968-10-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE740274A true BE740274A (https=) | 1970-03-16 |
Family
ID=8655912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE740274D BE740274A (https=) | 1968-10-21 | 1969-10-14 |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE740274A (https=) |
| DE (1) | DE1952617A1 (https=) |
| FR (1) | FR1589613A (https=) |
| LU (1) | LU59636A1 (https=) |
| NL (1) | NL6915895A (https=) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH649865A5 (en) * | 1980-07-02 | 1985-06-14 | Sprecher & Schuh Ag | High-voltage power circuit breaker having a drive rod tube consisting of electrically insulating material |
| DE3615501C2 (de) * | 1986-05-07 | 1998-01-15 | Hilti Ag | Verbindungselement aus Metall |
| FR2624931B1 (fr) * | 1987-12-18 | 1990-06-01 | Simmonds Sa | Element filete perfectionne formant par exemple une vis, et assemblage de pieces realise a l'aide de cet element |
-
1968
- 1968-10-21 FR FR1589613D patent/FR1589613A/fr not_active Expired
-
1969
- 1969-10-14 BE BE740274D patent/BE740274A/xx unknown
- 1969-10-14 LU LU59636D patent/LU59636A1/xx unknown
- 1969-10-18 DE DE19691952617 patent/DE1952617A1/de active Pending
- 1969-10-21 NL NL6915895A patent/NL6915895A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| LU59636A1 (https=) | 1970-01-12 |
| FR1589613A (https=) | 1970-03-31 |
| DE1952617A1 (de) | 1971-01-21 |
| NL6915895A (https=) | 1970-04-23 |