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Patents > Inventor country: DE & IPCs: IPC B64C39/00 & Number of claims: 1-2

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airplane (11) · Design (8) · propulsion (8) · propellers (5) · Frame (4) · Rudder (3) · Monoplane (3) · lift (3) · subsystem (3) · None (3) · Whole (3) · Control (2) · helicopter (2) · LTA (2) · Steering (2) · paddle-wheel (2) · glider (2)
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