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Patents > IPCs: IPC B64C39/00 & Number of text pages: 4-11 & Number of figures: 5-7

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airplane (11) · None (7) · wings (7) · Propellers (6) · heavier-than-air (5) · propulsion (5) · design (4) · stability (3) · frame (3) · hybrid (3) · control (3) · Sustentation (3) · Motors (2) · aerodynamics (2) · lift (2)
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