Drilldown: Patents
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Patents > Year filed:
1911
& Grant date:
1915
& Related to aircraft
:
1910562264
or
No
or
Yes
& National tech categories
:
DE 77h.5
or
HU V/h
or
USPC 244/233
or
USPC 244/3.23 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 2 results in range #1 to #2.