G04C3/067 - CPC Classification Index

ClassID:

179387 ⎘

G04C3/067 - CPC Classification

Classification description:

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 balance using electromagnetic coupling between electric power source and balance the balance controlling gear-train by means of static switches, e.g. transistor circuits Driving circuits with distinct detecting and driving coils

Sub-classes:

G04C3/068 » {provided with automatic control} 2

Recent Application in this class:

20190302698

Movement and electronic timepiece

20170038737

Escapement with escape wheel with field ramps and non-return

20160266546

Natural escapement

20150177698

Angular speed regulating device for a wheel set in a timepiece movement including a magnetic escapement mechanism

20150177697

Angular speed regulating device for a wheel set in a timepiece movement including a magnetic escapement mechanism

20130107677

Circuit for autoregulating the oscillation frequency of an oscillating mechanical system and device including the same