Drilldown: Patents

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Patents > National tech categories: FR 6.3 & Cites these patents : 1 or None & Citations from after 1930: None & Number of text pages: 1-2 & Number of claims: None

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LTA (11) · navigation (10) · propulsion (10) · aerostat (9) · balloon (8) · airplane (7) · sustentation (4) · ascension (3) · transmission (3) · safety (3) · dirigible (3) · electricity (3)
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