179377 ⎘
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 mechanical coupling
Sub-classes:TIMEPIECE PROVIDED WITH A MECHANICAL MOVEMENT AND A DEVICE FOR CORRECTING A DISPLAYED TIME
#2Timepiece assembly comprising a mechanical oscillator associated with an electronic device for controlling its mean frequency
#3Arbor of a pivoting movable timepiece component
#4Circuit for autoregulating the oscillation frequency of an oscillating mechanical system and device including the same