Drilldown: Patents

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Patents > Inventor country : NL or SE & Application number: None & Assigned to: None

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airplane (15) · Propulsion (12) · Wings (10) · frame (10) · Flapping (7) · subsystem (7) · LTA (6) · Design (6) · navigation (5) · propeller (5) · balloon (5) · stability (4) · Construction (4) · marine (4) · airfoil (4) · aerodynamics (4) · None (4)
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