CPC Subgroup
G04C 3/02 wherein movement is regulated by a pendulum
Full Title
Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means (clocks driven by synchronous motors G04C15/00) > wherein movement is regulated by a pendulum
5 direct subcodes
Child Classifications
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- G04C 3/027 using electromagnetic coupling between electric power source and pendulum (G04C3/033 takes precedence)
- G04C 3/033 using torsion pendulums; using conical pendulums