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Patents > CPCs : CPC Y10T74/13 or None & Number of figures: 21-40

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airplane (12) · propulsion (11) · Design (11) · frame (10) · stability (9) · Whole (8) · propellers (8) · propeller (6) · Wings (5) · Aerodynamics (5) · LTA (4) · navigation (4) · parachutes (4) · marine (3) · Flapping (3) · helicopter (3) · parachute (3) · hybrid (3) · Construction (3) · safety (3)
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