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Patents > CPCs : CPC B64C2700/6256 or CPC B64C33/02 & First filing: No & Number of text pages: 3-4

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airplane (13) · wings (10) · navigation (8) · control (8) · design (8) · frame (8) · flapping (7) · propulsion (7) · stability (6) · propellers (5) · ornithopter (5) · landing (5) · hybrid (5) · rudder (4) · propeller (4) · None (4) · lift (4)
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