Drilldown: Patents

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Patents > National tech categories : AT 77d or USPC 244/30 & Number of figures: 12-40

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LTA (8) · propulsion (7) · frame (6) · navigation (5) · airplane (5) · Wings (4) · propeller (4) · stability (3) · car (3) · flapping (3) · safety (3) · Aerodynamics (2) · Helicopter (2) · None (2) · design (2) · compartments (2) · balloon (2)
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