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Patents > Inventor country : DE or US & CPCs: CPC B64B1/62

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LTA (39) · gas (18) · balloon (15) · None (10) · navigation (9) · ballonet (9) · hydrogen (8) · safety (8) · Balloons (6) · airship (5) · dirigible (4) · fun (4) · control (4) · air pressure (3) · method (3) · elevation (3) · non-rigid (3) · rigid (3) · Aerostat (3) · ascension (3)
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None (16)
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Showing below up to 57 results in range #1 to #57.

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