Drilldown: Patents

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Patents > IPCs : IPC B64C25/64 or None & Number of claims: 26-29

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airplane (6) · frame (5) · hydroaeroplane (5) · marine (4) · design (4) · stability (4) · flying boat (3) · navigation (3) · Wings (3) · airfoil (3) · propulsion (2) · propellers (2) · takeoff (2) · wheels (2) · landing (2) · whole (2) · Rudder (2) · None (2) · control (2) · divided patent (2)
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