Drilldown: Patents

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Patents > Year filed: 1909 & Number of claims: 3-9 & Number of figures: 9

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airplane (8) · Frame (7) · Design (5) · helicopter (5) · propulsion (4) · rudder (4) · None (4) · propeller (3) · stability (3) · hybrid (2) · takeoff (2) · airfoil (2) · control (2) · safety (2) · wheels (2) · automatic stability (2)
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Showing below up to 23 results in range #1 to #23.

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