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Patents > CPCs : CPC B63H1/36 or CPC B64C23/005 & Number of claims: 3

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Airplane (14) · None (10) · propulsion (9) · propeller (7) · frame (6) · helicopter (6) · hybrid (5) · navigation (5) · stability (4) · wheels (4) · design (4) · whole (3) · propellers (3) · marine (3)
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Showing below up to 38 results in range #1 to #38.

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