Drilldown: Patents

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Patents > Year granted: 1900 - 1909 & Inventor location: None & Number of claims: 12-17

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Propulsion (15) · navigation (12) · LTA (11) · marine (10) · propeller (8) · frame (7) · airplane (7) · hybrid (6) · stability (6) · flapping (5) · None (4) · helicopter (4) · rudder (4) · whole (4) · propellers (4) · petroleum (3) · parachute (3) · bamboo (3) · subsystem (3) · landing (3)
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None (14) · USPC 244/22 (3) · USPC 244/6 (2) · USPC 244/20 (2) · HU V/h (2) · USPC 244/25 (2)
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