Drilldown: Patents

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Patents > Related to aircraft: Yes & National tech categories : AT 77d or USPC 244/17.21

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airplane (20) · frame (15) · LTA (14) · construction (10) · Propellers (10) · airship (9) · propulsion (8) · navigation (8) · design (7) · stability (6) · Control (6) · helicopter (6) · None (5) · balloon (5)
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Showing below up to 63 results in range #1 to #63.

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