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Patents > CPCs: CPC B64C23/005 & First filing: No & Number of claims: 3-7

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airplane (17) · propulsion (10) · design (8) · propellers (7) · hybrid (6) · frame (6) · Construction (5) · ascension (5) · aerodynamics (4) · Lift (4) · stability (4) · helicopter (4) · gas (3) · propeller (3) · None (3) · chassis (3) · wings (3)
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