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1680175
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Information
Patent Grant
1680175
References
Source
Patent Number
1,680,175
Date Filed
Not available
Date Issued
Tuesday, August 7, 1928
95 years ago
CPC
B64C27/12 - Rotor drives
B64C2700/6288 - Hydraulic, electric or man powered rotorcrafts
Y10T74/1555 - Rotary driven element
US Classifications
074 - Machine element or mechanism
244 - Aeronautics and astronautics
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