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Patents > IPCs : IPC B29C41/14 or IPC B64B1/58 & Number of diagram pages: 2-7

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LTA (19) · navigation (5) · frame (5) · construction (5) · Stability (4) · None (4) · texture (4) · Dirigible (3) · ballonet (3) · balloon (3) · airship (3)
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