Drilldown: Patents

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Patents > National tech categories : DE 77h or USPC 74/665B & Number of claims: 2-4

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LTA (7) · frame (4) · whole (4) · flapping (4) · None (3) · balloon (3) · steering (3) · navigation (3) · gas (3) · subsystem (2) · stability (2) · propulsion (2) · method (2) · airfoil (2) · hybrid (2) · wings (2) · car (2)
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