Drilldown: Patents

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Patents > Publication date: 1900 - 1909 & Supplementary to patent: None & National tech categories: AT 77d

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LTA (12) · frame (8) · balloon (6) · subsystem (6) · propulsion (5) · wings (4) · Flapping (4) · car (4) · propeller (3) · navigation (3) · aerodynamics (3) · None (3) · airfoil (3)
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