Drilldown: Patents

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Patents > IPCs : IPC B64B1/62 or IPC B64C31/06 & Citations from after 1930: None & Number of text pages: 3-20000000

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LTA (15) · kite (9) · gas (9) · stability (5) · balloon (5) · ballonet (5) · Navigation (4) · Dirigibles (3) · construction (3) · Airship (3) · Aerostat (3) · hydrogen (3) · frame (3)
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