179392 ⎘
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 mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means constructional details
Sub-classes:Wearable object, in particular watch bracelet, comprising a power supply device provided with an electromechanical converter
#2Timepiece
#3Regulating system for a mechanical watch
#4Watch comprising a magnetic clamping device
#5Wheel with reduced mechanical friction for timepieces
#6Tuning fork oscillator for timepieces
#7Regulating system for a mechanical watch