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Patents > Inventor country : AU or DE & IPCs: IPC B64C39/00 & Number of text pages: 2-3

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Airplane (13) · design (9) · Frame (5) · None (4) · Whole (4) · Propellers (4) · control (3) · Monoplane (3) · aerodynamics (3) · Lift (3) · wings (3) · aeroplane (3)
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