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Patents > Inventor country: US & National tech categories: USPC 244/87 & IPCs: None

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None (13) · airplane (11) · frame (10) · rudder (8) · wheels (5) · propeller (5) · stability (4) · navigation (4) · airfoil (4) · car (3) · safety (2) · propellers (2) · parachute (2) · HTA (2) · wings (2) · construction (2) · fuselage (2)
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