Drilldown: Patents

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Patents > Grant date: December 1919 & Citations from after 1930: None

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construction (6) · stability (6) · airplane (5) · None (4) · Airship (4) · Frame (4) · Control (3) · LTA (3) · wings (2) · spars (2) · propellers (2) · heavier-than-air (2) · fuselage (2) · electricity (2) · Design (2) · gas (2) · aileron (2) · Balloons (2) · automatic stability (2)
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Showing below up to 28 results in range #1 to #28.

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