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Patents > Related to aircraft: 1 & CPCs: CPC B64B1/58 & Number of claims: 3-7

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LTA (25) · envelope (5) · balloon (5) · gas (5) · frame (4) · ballonet (3) · navigation (3) · fabric (3) · propulsion (2) · Lift (2) · hybrid (2) · safety (2) · balloons (2)
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