Drilldown: Patents

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Patents > Inventor country: RU & Grant date: 1900 - 1999 & Number of figures: 8-50000000

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frame (10) · airplane (8) · wings (7) · propulsion (7) · aerodynamics (7) · LTA (6) · marine (5) · hydrodynamics (5) · energy (5) · hybrid (4) · elasticity (4) · control (3) · envelope (3) · automatic stability (2) · balloon (2) · metal (2) · design (2) · flapping (2)
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