Drilldown: Patents

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Patents > Related to aircraft : Yes or yes, Jul 6 1908 & National tech categories : USPC 244/153R or None & Number of text pages: 4-6 & Number of figures: 3

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balloon (3) · LTA (3) · navigation (3) · propulsion (3) · wings (2) · frame (2) · marine (2) · hydrogen (2) · helicopter (2) · stability (2) · airplane (2) · sustentation (2)
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