Drilldown: Patents
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Patents > Applicant firm:
None
& Filing date:
1880 - 1889
& Related to aircraft :
.5? or
1909-11-30 or
No or
None
& National tech categories :
BE K or
DE 77h.5 or
USPC 244/153R or
USPC 244/22 or
USPC 244/80
& IPCs:
None
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Showing below up to 1 result in range #1 to #1.