Drilldown: Patents

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Patents > Filing date: 1906 & Number of claims: 7-40 & Number of figures: 3-20

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navigation (8) · flapping (8) · LTA (7) · stability (6) · airplane (6) · propulsion (5) · propeller (4) · ornithopter (4) · landing (3) · frame (3) · airfoil (3) · hybrid (3) · rudder (2) · military (2) · human-powered (2) · helicopter (2) · None (2) · car (2)
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