Drilldown: Patents
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Patents > Grant date:
March 9, 1880
& Related to aircraft:
Yes
& National tech categories :
USPC 244/153R or
USPC 244/80
& Family year:
1870 - 1879
& Cites these patents :
Patent GB-1909-3202 or
None
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Showing below up to 1 result in range #1 to #1.