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Patents > IPCs : IPC B64B1/40 or IPC B64C21/02 & Number of figures: 5-30

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LTA (20) · balloon (9) · design (8) · stability (7) · construction (7) · Control (6) · suspension (6) · navigation (6) · Nacelle (5) · car (5) · captive (5) · wings (4) · balloons (4) · airplane (4)
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