G04C 3/00 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)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
CPC: 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)
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
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)
Of 8 combined children, 6 exist in both systems.
2 codes are CPC-only extensions.
2 shared codes have differing titles between IPC and CPC.
Child Classifications
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- G04C 3/08 wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork since 1980 IPC+CPC Available in IPC and CPC
- G04C 3/14 incorporating a stepping motor (G04C3/02 - G04C3/12 take precedence ) since 1980 +2 CPC IPC+CPC Available in IPC and CPC
- G04C 3/16 incorporating an electro-dynamic continuously rotating motor (G04C3/02 - G04C3/12 take precedence) since 1980 +1 CPC IPC+CPC Available in IPC and CPC
- G04C 3/18 incorporating electro-thermal or electro-pneumatic driving means since 1980 IPC+CPC Available in IPC and CPC