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3221231
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Information
Patent Grant
3221231
References
Source
Patent Number
3,221,231
Date Filed
Not available
Date Issued
Tuesday, November 30, 1965
59 years ago
CPC
G04C3/067 - Driving circuits with distinct detecting and driving coils
G04C3/0278 - the pendulum controlling the gear-train by means of static switches
G04C3/06 - using electro-magnetic coupling between electric power source and balance
G04C3/065 - the balance controlling gear-train by means of static switches
G04C3/068 - provided with automatic control
US Classifications
318 - Electricity: motive power systems
331 - Oscillators
368 - Horology: time measuring systems or devices
968 - Horology
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