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Patents > Filing date: July 1912 & Grant date: 1912 & Granted: Yes

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airplane (15) · design (9) · None (8) · aerodynamics (5) · wings (5) · stability (4) · propulsion (4) · propellers (4) · parachutes (3) · control (3) · instrument (2) · HTA (2) · whole (2) · motors (2) · incidence (2) · landing (2) · construction (2)
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