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Patents > Filing date: 1910 & Patent agent : Dupont et Elluin‎ or E. Blétry

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airplane (13) · Stability (10) · lift (8) · design (8) · propellers (7) · Sustentation (6) · Aerodynamics (6) · frame (6) · Wings (5) · Construction (5) · Subsystem (5) · propulsion (5) · whole (4) · None (3) · Control (3) · automatic stability (3)
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Showing below up to 36 results in range #1 to #36.

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