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Patents > Filing date: January 1912 & Granted: Yes & First filing: No

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None (14) · airplane (10) · design (6) · frame (5) · stability (4) · propellers (4) · automatic stability (3) · Parachutes (3) · parachute (3) · aerodynamics (3)
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Showing below up to 36 results in range #1 to #36.

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