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Patents > Year granted: 1920 - 1929 & Office: US & Number of claims: 15-20

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airplane (5) · None (4) · stability (3) · fuselage (3) · rudder (3) · control (3) · longerons (2) · navigation (2) · aerodynamics (2) · construction (2) · design (2) · amerrissage (2) · propeller (2)
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Showing below up to 22 results in range #1 to #22.

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