IPC Main Group
G08B 5/00 Visible signalling systems, e.g. visible personal calling systems or remote indication of seats occupied
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
Scope Notes
Application references: Indicating the time by visual means in mechanically-driven clocks or watches Indicating the time optically by electric means in electromechanical clocks or watches Producing optical time signals at prefixed times by electric means in electromechanical clocks or watches Visual time or date indication means in electronic time-pieces
Related Keywords
HELIOGRAPHSindicators for signallingsignalling arrangements indicating free spaces in PARKING areasSEMAPHORE(S) for signalling of messages
4 direct subcodes
Child Classifications
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