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Patents > Citations from after 1930: None & Number of diagram pages: 1-2 & Number of figures: 21-27

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airplane (13) · stability (11) · design (10) · wings (9) · propulsion (9) · aerodynamics (7) · propellers (7) · frame (6) · Whole (5) · construction (4) · lift (4) · propeller (4) · helicopter (3) · Flapping (3) · control (3) · wood (3) · steering (3)
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Showing below up to 37 results in range #1 to #37.

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