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Patents > National tech categories : USPC 244/30 or USPC 244/66 & Number of diagram pages: 2-3

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LTA (18) · frame (13) · propeller (11) · propulsion (11) · navigation (9) · airplane (6) · parachute (6) · balloon (6) · rudder (6) · airfoil (5) · car (5) · hybrid (4) · safety (4) · helicopter (3) · wheels (3) · stability (3) · whole (2) · ascension (2) · landing (2) · marine (2)
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Showing below up to 36 results in range #1 to #36.

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