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Patents > Inventor country : DE or NO & IPCs: IPC B64C39/00 & Citations from after 1930: None

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airplane (12) · Design (7) · propulsion (7) · wings (6) · Frame (6) · propellers (5) · lift (5) · None (5) · aeroplane (4) · Whole (4) · control (4) · Rudder (3) · propeller (3) · Monoplane (3) · LTA (3) · helicopter (3)
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