Drilldown: Patents

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Patents > Applicant person: None & Number of text pages: 5-9 & Number of diagram pages: 2

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airplane (16) · frame (15) · navigation (9) · propeller (7) · hybrid (6) · stability (6) · None (5) · whole (5) · propulsion (5) · design (5) · marine (3) · Helicopter (3) · safety (3) · airfoil (3) · takeoff (3) · subsystem (2) · human-powered (2) · kite (2) · landing (2) · biplane (2)
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