Drilldown: Patents

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Patents > Office: DE & CPCs : CPC B64B1/58 or CPC B64C11/36

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LTA (34) · balloon (11) · frame (10) · None (9) · gas (6) · airship (5) · car (5) · design (4) · compartments (4) · rigid (3) · propeller (3) · navigation (3) · fabric (3) · material (3)
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