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Patents > CPCs : CPC B63H1/08 or CPC B64C3/00 & Number of claims: 3

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airplane (15) · None (10) · wings (10) · frame (10) · construction (8) · design (5) · wires (3) · biplane (2) · airfoil (2) · wing (2) · stays (2) · cables (2) · fuselage (2) · control (2)
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