IPC Main Group
G08B 1/00 Systems for signalling characterised solely by the form of transmission of the signal
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- PHYSICS
- Class:
- SIGNALLING
- Subclass:
- SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
3 direct subcodes
Child Classifications
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