IPC Main Group
G04C 13/00 Driving mechanisms for clocks by primary clocks
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- PHYSICS
- Class:
- HOROLOGY
- Subclass:
- ELECTROMECHANICAL CLOCKS OR WATCHES
2 direct subcodes
Child Classifications
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- G04C 13/02 Circuit arrangements; Electric clock installations
- G04C 13/08 Secondary clocks actuated intermittently