Description: 968 horology / 968 horology/(103) mechanisms for stabilizing frequency (magnetic subclass 497; in striking mechanisms subclass 224; stopping and regulating of the running subclass 234; electrical and thermoelectric regulating mechanisms subclass 496) [g04b 17/00] (107) oscillators acting by spring tension [g04b 17/04] (113) oscillators with torsion strips or springs acting in the same manner as torsion strips, e.g., weight oscillating in a horizontal plane, etc. (electrically driven torsion pendulum subclass 464) [g04b 17/10]
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