Drilldown: Patents

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Patents > Year granted: 1870 - 1879 & Inventor country: US & Applicant type : COMPANY or Other & Citations from after 1930: None

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Tech fields:
propulsion (7) · propeller (4) · LTA (4) · None (3) · marine (3) · human-powered (2) · windmill (2) · paddle wheels (2) · windmills (2) · frame (2) · flapping (2)
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None (5) · USPC 416/139 (3) · USPC 416/194 (2)
CPCs:
CPC B64C11/006 (3) · CPC B64C27/54 (3) · CPC B64C11/346 (3) · CPC F03D11/00 (2) · CPC A63B71/0672 (2) · CPC Y02E10/722 (2) · CPC Y02E10/223 (2) · CPC B64C11/00 (2) · CPC F01D5/06 (2) · CPC B64C27/322 (2) · CPC B63H1/04 (2)
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