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3668488
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Information
Patent Grant
3668488
References
Source
Patent Number
3,668,488
Date Filed
Not available
Date Issued
Tuesday, June 6, 1972
52 years ago
CPC
G04C3/067 - Driving circuits with distinct detecting and driving coils
G04C3/165 - comprising a mechanical regulating device influencing the electromotor
G04C15/00 - Clocks driven by synchronous motors
H02K29/12 - using detecting coils using the machine windings as detecting coil
H02P25/024 - controlled by supply frequency
US Classifications
318 - Electricity: motive power systems
968 - Horology
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