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Class Information
Number: 368/158
Name: Horology: time measuring systems or devices > Electrical time base > Solid state oscillating circuit type > For reciprocating or oscillating element > Balance wheel type
Description: Subject matter wherein the element is a wheel for regulating the beats of a timepiece.

Patents under this class:

Patent Number Title Of Patent Date Issued
6391137 Method for producing display device May. 21, 2002
4731764 Sonar transducers Mar. 15, 1988
4507623 Oscillating device with capacitive displacement pickup Mar. 26, 1985
4415274 Step motor Nov. 15, 1983
4340948 Single-coil balance wheel for driving a mechanical movement Jul. 20, 1982
4036006 Time-keeping apparatus Jul. 19, 1977
4011714 Device for maintaining the oscillation of a balance for a timepiece Mar. 15, 1977
3965667 Device for the maintenance and control of the oscillations of the balance wheel of a timepiece Jun. 29, 1976
3952497 Method and apparatus for synchronizing andoscillating system which is driven by an energy storage device Apr. 27, 1976

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