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Patents > IPCs: IPC B64B1/00 & Number of text pages: 4-5 & Number of claims: 4-90

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LTA (18) · airship (6) · navigation (5) · balloon (5) · dirigible (4) · compartments (3) · hybrid (3) · construction (3) · None (3) · car (3) · safety (3) · frame (2) · landing (2) · gas (2) · propellers (2) · envelope (2) · ballonet (2) · passenger (2)
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