Drilldown: Patents
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Patents > Year filed:
1900 - 1909
& Filing date:
1908
& National tech categories:
USPC 244/48
& First filing:
Yes ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 4 results in range #1 to #4.