Drilldown: Patents

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Patents > Inventor country : ES or RU & Number of figures: 8-60

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frame (13) · LTA (12) · wings (9) · propulsion (9) · airplane (9) · aerodynamics (8) · marine (7) · energy (6) · hydrodynamics (6) · elasticity (5) · hybrid (5) · flapping (4) · envelope (4) · control (4) · balloon (4) · stability (3) · design (3)
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