Drilldown: Patents

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Patents > Year filed: 1912 & Patent agent : None or Phillips & Leigh

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airplane (10) · stability (6) · wings (5) · design (5) · ornithopter (4) · toy (4) · aerodynamics (4) · parachutes (4) · model (3) · Sustentation (3) · Frame (3) · hybrid (2) · parachute (2) · Propulsion (2) · flapping (2) · Lift (2) · Steering (2) · dirigible (2) · Subsystem (2) · automatic stability (2)
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Showing below up to 32 results in range #1 to #32.

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