Drilldown: Patents

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Patents > Supplementary to patent: None & Related to aircraft : 0? or 1911-07-04 or Yes & National tech categories : USPC 244/45R or None & First filing: None

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None (1309) · Albert de Dion (2) · Horatio Frederick Phillips (2)
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None (1115) · LTA (82) · navigation (63) · balloon (47) · propulsion (28) · Airplane (16) · balloons (11) · Aerial Navigation* (7) · construction (6) · helicopter (6) · stability (5) · design (4) · frame (4) · marine (4) · airfoil (4)
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