发明授权
US09563175B2 Balance spring stud-holder 有权
平衡弹簧螺栓架

Balance spring stud-holder
摘要:
An assembly for holding or supporting a timepiece balance spring including a base provided with an upper surface and a lower surface on which a balance spring stud and a stud-holder are arranged. The stud-holder secures the stud to an escapement mechanism.
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