Drilldown: Patents

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Patents > Year filed: 1909 & Year granted: 1909 & Grant date: July 1909

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None (9) · airplane (9) · Design (7) · LTA (7) · Propulsion (6) · navigation (5) · hybrid (5) · stability (4) · frame (4) · Ascension (3) · safety (3) · flapping (3) · Propellers (3) · control (3) · sustentation (3) · rudder (2) · Helicopter (2) · wings (2) · Airship (2) · construction (2)
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Showing below up to 37 results in range #1 to #37.

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