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Patents > National tech categories : FR 6.3 or USPC 89/1.1 & Number of claims: 6-30

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None (4) · LTA (3) · construction (3) · propulsion (3) · propellers (3) · frame (2) · wings (2) · aerostat (2) · ascension (2) · balloon (2) · navigation (2) · parachute (2) · hybrid (2) · dirigible (2)
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Showing below up to 14 results in range #1 to #14.

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