NL148728B - ALARM SYSTEM. - Google Patents
ALARM SYSTEM.Info
- Publication number
- NL148728B NL148728B NL7018551A NL7018551A NL148728B NL 148728 B NL148728 B NL 148728B NL 7018551 A NL7018551 A NL 7018551A NL 7018551 A NL7018551 A NL 7018551A NL 148728 B NL148728 B NL 148728B
- Authority
- NL
- Netherlands
- Prior art keywords
- alarm system
- alarm
- Prior art date
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
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7018551A NL148728B (en) | 1970-12-21 | 1970-12-21 | ALARM SYSTEM. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7018551A NL148728B (en) | 1970-12-21 | 1970-12-21 | ALARM SYSTEM. |
Publications (2)
Publication Number | Publication Date |
---|---|
NL7018551A NL7018551A (en) | 1972-06-23 |
NL148728B true NL148728B (en) | 1976-02-16 |
Family
ID=19811851
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL7018551A NL148728B (en) | 1970-12-21 | 1970-12-21 | ALARM SYSTEM. |
Country Status (1)
Country | Link |
---|---|
NL (1) | NL148728B (en) |
-
1970
- 1970-12-21 NL NL7018551A patent/NL148728B/en unknown
Also Published As
Publication number | Publication date |
---|---|
NL7018551A (en) | 1972-06-23 |
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