Drilldown: Patents
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Patents > Applicant is inventor:
Yes
& Filing date:
1913
& National tech categories
:
DE 77h.9
or
USPC 244/30
& CPCs:
CPC B64F2700/6226 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 1 result in range #1 to #1.