US PATENT SUBCLASS 968 / 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]

US PATENT SUBCLASS 968 / 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]

968 /	HD	HOROLOGY

103	DD	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] {8}
107	DD	.~ Oscillators acting by spring tension [G04B 17/04] {4}
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]