Patents
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G04 - Horology
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G04C - Electromechanical clocks or watches
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G04C 13 - Driving mechanisms for clocks by master clocks
Patents for G04C 13 - Driving mechanisms for clocks by master clocks (402)
02/1976
02/24/1976
US3940645
Small-sized synchronous motor
02/10/1976
US3937003
Electric clock
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