Drilldown: Patents

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Patents > Inventor country: RU & Applicant firm: None & Number of text pages: 3

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airplane (8) · hybrid (5) · propulsion (5) · frame (4) · LTA (4) · helicopter (4) · wings (4) · aerodynamics (4) · energy (2) · metal (2) · propellers (2) · hydrodynamics (2) · human-powered (2) · aeroplane (2) · marine (2) · envelope (2) · None (2) · whole (2) · steering (2) · flapping (2)
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