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Patents > Filing date: 1900 - 1909 & CPCs: CPC B64C23/005 & Number of figures: 8-12

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Airplane (12) · navigation (7) · propulsion (6) · frame (5) · takeoff (4) · Hybrid (4) · propeller (4) · stability (3) · Design (3) · LTA (3) · Balloons (2) · Parachutes (2) · parachute (2) · Ascension (2) · airfoil (2) · Lift (2) · propellers (2) · Sustentation (2) · Whole (2)
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