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Patents > CPCs: CPC B64B1/40 & First filing: Yes & Number of text pages: 1-2

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LTA (32) · balloon (16) · navigation (5) · frame (5) · safety (4) · propeller (4) · car (4) · stability (4) · parachute (3) · balloons (3) · suspension (3) · rudder (3) · hybrid (3) · kite (3)
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