IPC Main Group
G04C 3/00 Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- PHYSICS
- Class:
- HOROLOGY
- Subclass:
- ELECTROMECHANICAL CLOCKS OR WATCHES
6 direct subcodes
Child Classifications
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- G04C 3/02 wherein movement is regulated by a pendulum
- G04C 3/04 wherein movement is regulated by a balance
- G04C 3/08 wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork
- G04C 3/14 incorporating a stepping motor
- G04C 3/16 incorporating an electro-dynamic continuously rotating motor
- G04C 3/18 incorporating electro-thermal or electro-pneumatic driving means