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Patents > Inventor country : RU or US & CPCs: CPC B64C23/005 & Number of text pages: 1-2

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navigation (11) · Airplane (11) · propulsion (9) · propeller (9) · frame (6) · helicopter (5) · rudder (4) · LTA (4) · wheels (3) · stability (3) · hybrid (3) · None (3) · airship (3) · wings (2) · parachute (2) · aerodrome (2) · takeoff (2) · marine (2)
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