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Patents > CPCs : CPC B64C39/005 or CPC B64D17/52 (EP) & Number of claims: 1-2

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None (9) · propulsion (9) · propeller (5) · navigation (5) · LTA (5) · frame (4) · airplane (3) · HTA (3) · whole (2) · steering (2) · stability (2) · propellers (2) · marine (2) · helicopter (2) · heavier-than-air (2) · hybrid (2) · flying machine (2) · design (2) · wings (2)
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