179430 ⎘
Synchronisation of independently-driven clocks using an electro-magnet or-motor for oscillation correction using an electro-magnet acting on the balance
Timepiece assembly comprising a watch and a system for correcting the time
#2Timepiece incorporating an actuator comprising an electromechanical device
#3Self-adjustable horological oscillator
#4Timepiece comprising a mechanical movement wherein the working is regulated by an electromechanical device
#5Timepiece assembly comprising a mechanical oscillator associated with a regulating device
#6Timepiece having a mechanical movement associated with an electronic regulator