Drilldown: Patents

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Patents > National tech categories : AT 77d or USPC 244/904 & Number of figures: 8-16

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Airplane (9) · Wings (7) · stability (6) · frame (5) · construction (4) · propeller (4) · navigation (3) · flapping (3) · design (3) · subsystem (3) · whole (3) · automatic stability (3)
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