179660 ⎘
Measuring, counting, calibrating, testing or regulating apparatus for balance wheels for balancing by removing material from the balance wheel itself Automatic devices therefor (balancing and loading or removing carried out automatically)
Smart watch winding device
#2Mechanism for regulating the rate of a timepiece oscillator
#3Inertia setting or poising of a timepiece sprung balance assembly
#4Method for adjusting the oscillation frequency and/or adjusting the inertia and/or balancing of a movable timepiece movement component or of a timepiece spring balance assembly