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Patents > IPCs: IPC B64B1/00 & CPCs: CPC B64B1/00 & Number of text pages: 5-30

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LTA (18) · None (6) · propulsion (5) · balloon (5) · compartments (4) · frame (4) · landing (3) · dirigible (3) · construction (3) · hybrid (3) · airplane (3) · airship (3)
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