Drilldown: Patents
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Patents > Year filed:
1912
& Inventor country:
US
& Related to aircraft
:
Yes
or
flapping
& National tech categories
:
FR 6.3
or
GB 4 propel & steer
or
USPC 244/22
or
USPC 244/233 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 9 results in range #1 to #9.