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Patents > National tech categories : CH 94 or USPC 244/45R & Citations from after 1930: None

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stability (15) · airplane (13) · frame (11) · airfoil (8) · wheels (4) · propeller (4) · None (3) · control (3) · rudder (3) · navigation (3) · wings (3) · automatic stability (3) · aerodynamics (3) · structure (2) · design (2) · safety (2) · skids (2) · biplane (2)
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Showing below up to 29 results in range #1 to #29.

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