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Patents > Grant date: 1914 & National tech categories : HU V/h or IT 8 or USPC 244/45R

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Airplane (23) · stability (13) · automatic stability (9) · design (8) · propellers (6) · Wheels (5) · Aerodynamics (5) · None (4) · Equilibrium (4) · Airship (4) · construction (4) · Frame (4) · Safety (3) · piloting (3) · Hangars (3) · landing (3) · chassis (3)
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Showing below up to 44 results in range #1 to #44.

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