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Patents > CPCs : CPC B64C39/08 or CPC B64B1/58 & Number of claims: 7-15

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LTA (9) · ballonet (4) · stability (4) · balloon (4) · navigation (4) · fabric (4) · texture (3) · airplane (3) · airfoil (3) · frame (3) · car (3) · propulsion (3) · construction (3) · gas (3)
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