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1815729
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Information
Patent Grant
1815729
References
Source
Patent Number
1,815,729
Date Filed
Not available
Date Issued
Tuesday, July 21, 1931
93 years ago
CPC
G04C1/085 - by continuously rotating movement
US Classifications
185 - Motors: spring, weight, or animal powered
368 - Horology: time measuring systems or devices
968 - Horology
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