Drilldown: Patents
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Patents > Supplementary to patent
:
Patent BE-1909-214032
or
None
& Related to aircraft
:
0?
or
1911-07-04
or
Yes
& Assigned to:
Lawrence Sperry Aircraft Company
& National tech categories
:
USPC 244/45R
or
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Showing below up to 1 result in range #1 to #1.