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Patents > Related to aircraft: 1 & IPCs: IPC B64C39/00 & Number of diagram pages: 4-20000000

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airplane (10) · propulsion (8) · None (7) · design (6) · whole (4) · control (4) · frame (3) · construction (3) · propellers (3) · wheels (2) · stability (2) · rudders (2) · rudder (2) · navigation (2) · Lift (2) · fuselage (2) · wings (2) · flapping (2) · airship (2)
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