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Patents > Filing date: 1907 & Granted: Yes & Number of figures: 10-40

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Propulsion (10) · airplane (10) · LTA (9) · stability (8) · navigation (6) · propellers (5) · marine (4) · frame (4) · design (4) · motors (4) · hybrid (4) · wheels (3) · takeoff (3) · wings (3)
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