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

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wings (7) · design (7) · propulsion (7) · frame (7) · flapping (7) · navigation (6) · ornithopter (5) · hybrid (5) · propellers (4) · propeller (4) · landing (4) · airplane (4) · HTA (3)
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