Drilldown: Patents
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Patents > Filing date:
July 1, 1918
& Application number
:
490932D
or
rudder
& Publication date:
May 15, 1919
& National tech categories
:
FR 6.4
or
USPC 244/22
& CPCs:
CPC B64C39/00
& First filing:
No ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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