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Patents > Applicant type: INDIV & National tech categories : FR 6.4 or USPC 244/66 & IPCs: IPC B64B1/62

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LTA (22) · Dirigibles (4) · propulsion (4) · compartments (4) · gas (4) · Airship (3) · subsystem (3) · propellers (3) · navigation (3) · lift (3) · whole (2) · hybrid (2) · fueling (2) · hydrogen (2) · Balloons (2) · Design (2) · Ballonet (2) · Construction (2)
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