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1807698
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Patent Grant
1807698
References
Source
Patent Number
1,807,698
Date Filed
Not available
Date Issued
Tuesday, June 2, 1931
94 years ago
CPC
G04C15/0081 - Automatic stabilisation of net frequency with regard to time
US Classifications
290 - Prime-mover dynamo plants
073 - Measuring and testing
322 - Electricity: single generator systems
361 - Electricity: electrical systems and devices
968 - Horology
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