using electromagnetic coupling between electric power source and pendulum (G04C3/033 takes precedence)

Introduced: January 1980

Title

Titles differ between systems:

IPC: using electromagnetic coupling between electric power source and pendulum

CPC: using electromagnetic coupling between electric power source and pendulum (G04C3/033 takes precedence)

Full Title

Full titles differ between systems:

IPC:

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 pendulum > using electromagnetic coupling between electric power source and pendulum

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) > wherein movement is regulated by a pendulum > using electromagnetic coupling between electric power source and pendulum (G04C3/033 takes precedence)

Of 5 combined children, 0 exist in both systems.

5 codes are CPC-only extensions.

Child Classifications

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G04C 3/0271 CPC only CPC only
G04C 3/0273 CPC only CPC only
G04C 3/0275 CPC only CPC only
G04C 3/0276 CPC only CPC only
G04C 3/0278 CPC only CPC only