DIFF Subgroup
G04B 1/145 Full Title
Driving mechanisms > with mainspring > Mainsprings; Bridles therefor (mainsprings with bridles G04B1/18; alloys C22C; springs in general F16F )
G04B 1/145 Driving mechanisms > with mainspring > Mainsprings; Bridles therefor (mainsprings with bridles G04B1/18; alloys C22C; springs in general F16F )