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Patents > CPCs : CPC B64B1/00 or CPC B64B1/58 & Number of claims: 5

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LTA (29) · navigation (10) · frame (9) · balloon (8) · dirigibles (7) · propulsion (6) · design (6) · balloons (5) · hybrid (5) · safety (4) · Rigid (4) · car (4) · ballonet (4) · propeller (4)
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