Drilldown: Patents

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Patents > National tech categories : FR 6.4 or USPC 244/90R & IPCs : IPC B64B1/62 or IPC B64C31/06

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LTA (19) · None (11) · Compartments (3) · Navigation (3) · gas (3) · propulsion (3) · Dirigibles (3) · Design (3) · lift (3) · Construction (3) · kite (3) · subsystem (3) · stability (3) · Ballonet (3) · fueling (2) · Balloons (2) · Aerostat (2) · airship (2) · hydrogen (2)
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Showing below up to 37 results in range #1 to #37.

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