IPC Subgroup
G08B 13/22 Electrical actuation
Introduced: September 1968
Last revised: January 2006
Full Title
Burglar, theft or intruder alarms > Electrical actuation
Classification Context
- Section:
- PHYSICS
- Class:
- SIGNALLING
- Subclass:
- SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
2 direct subcodes
Child Classifications
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- G08B 13/24 by interference with electromagnetic field distribution
- G08B 13/26 by proximity of an intruder causing variation in capacitance or inductance of a circuit