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Patents > National tech categories: FR 6.4 & CPCs : CPC A63H27/08 or CPC B64C39/005

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design (12) · kite (11) · Airplane (6) · Construction (5) · stability (5) · frame (5) · None (4) · Sustentation (4) · Propulsion (4) · Lift (4) · aerodynamics (4) · heavier-than-air (4) · wings (4) · navigation (3) · flapping (3)
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Showing below up to 33 results in range #1 to #33.

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