Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means

Classification Context

Section:

PHYSICS

Class:

HOROLOGY

Subclass:

ELECTROMECHANICAL CLOCKS OR WATCHES

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