Drilldown: Patents
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Patents > Supplementary to patent:
None
& Related to aircraft
:
0?
or
1911-07-04
or
Yes
& Assigned to
:
L W F Engineering Company
or
Lawrence Sperry Aircraft Company
& National tech categories
:
USPC 244/45R
or
None ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 1 result in range #1 to #1.