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Patents > CPCs : CPC B64C17/00 or CPC B64C33/00 & Number of claims: 8-9

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stability (21) · airplane (14) · frame (8) · automatic stability (8) · None (6) · design (5) · construction (4) · propeller (4) · equilibrium (4) · wheels (3) · safety (3) · wings (3) · airfoil (3) · aerodynamics (3) · control (2) · triplane (2) · takeoff (2) · subsystem (2) · braking (2) · ornithopter (2)
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