Drilldown: Patents
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Patents > Year granted:
1900 - 1909
& Office
:
CU
or
US
& Inventor country
:
AH
or
AU
& National tech categories
:
AT 77d
or
USPC 416/197A ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 1 result in range #1 to #1.