Drilldown: Patents

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Patents > Inventor location : Chicago or Pennsylvania & Number of text pages: 3-20000000

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None (8) · propeller (6) · airplane (6) · propulsion (5) · frame (5) · stability (4) · navigation (4) · takeoff (3) · safety (3) · hybrid (3) · HTA (3) · flapping (2) · helicopter (2) · wheels (2) · fuselage (2) · cargo (2)
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