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Patents > Office: FR & CPCs: CPC B64C39/00 & Number of figures: 14-100

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airplane (12) · design (6) · None (5) · stability (5) · propellers (5) · aerodynamics (5) · wings (4) · frame (4) · construction (4) · navigation (3) · lift (3) · control (3) · ascension (2) · whole (2) · sustentation (2) · biplane (2) · rudder (2) · propulsion (2)
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