Drilldown: Patents
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Patents > Inventor country:
NL
& Publication date:
1900 - 1999
& National tech categories
:
AT 77d
or
FR 6.4
& Citations from after 1930:
None ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 10 results in range #1 to #10.