Drilldown: Patents
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Patents > Year granted:
1910 - 1919
& Office
:
BE
or
DE
or
NL
or
Other
& Inventor country:
Prussia
& Related to aircraft:
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![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 14 results in range #1 to #14.
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