G04C 3/08 wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork
Introduced: January 1980
Full Title
Full titles differ between systems:
Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means > wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork
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 mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
1 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 1980.
Child Classifications
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- G04C 3/12 driven by piezoelectric means; driven by magneto-strictive means since 1980 +1 CPC IPC+CPC Available in IPC and CPC