Drilldown: Patents
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Patents > Filing date:
1908
& National tech categories
:
DE 77h.5
or
USPC 244/80
& Family year:
1900 - 1909 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 15 results in range #1 to #15.