Drilldown: Patents

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Patents > Inventor country : AU or RU & Family year: 1909

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airplane (9) · frame (5) · flying machine (5) · launching (4) · landing (4) · lift (4) · LTA (4) · elevator (4) · propulsion (4) · automatic stability (4) · stability (4) · takeoff (4) · springs (3) · propeller (3) · design (3) · airfoil (3) · wheels (3) · whole (3) · None (3)
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