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Patents > Office : FR or Other & Filing date: 1913 & National tech categories: BE K

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Airplane (13) · Design (7) · hybrid (6) · propellers (6) · construction (4) · control (4) · frame (4) · ascension (3) · parachute (3) · helicopter (3) · fuselage (3) · stability (3) · rudder (2) · propulsion (2) · navigation (2) · safety (2) · sustentation (2) · traction (2) · wings (2)
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Showing below up to 21 results in range #1 to #21.

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