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Patents > Office: US & Related to aircraft : 0.5 or Yes & Number of text pages: 3 & Number of claims: 2-3

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Tech fields:
Frame (11) · airplane (10) · propulsion (9) · LTA (8) · navigation (6) · stability (5) · propellers (5) · whole (4) · automatic stability (4) · balloon (4) · Design (4) · None (3) · propeller (3) · piloting (3) · parachute (3) · military (3) · hybrid (3) · flapping (3) · ascension (3) · wings (3)
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National tech categories:
USPC 244/90R (5) · USPC 244/79 (3) · None (2) · USPC 244/64 (2) · USPC 244/30 (2) · USPC 244/66 (2) · USPC 244/87 (2)
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Showing below up to 33 results in range #1 to #33.

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