Drilldown: Patents
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Patents > Inventor country:
DE
& Granted:
Yes
& Supplementary to patent
:
Patent DE-1895-98580
or
Patent DE-1913-02-20 Gustav Mees
or
Patent US-1913-04-21 George Raymond Lawrence
& National tech categories
:
FR 6.4
or
USPC 244/119 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 1 result in range #1 to #1.