Drilldown: Patents
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Patents > Inventor country
:
CH
or
NL
& National tech categories
:
NL 62.5
or
USPC 244/153R
or
USPC 244/90R
& IPCs
:
IPC B64C3/18
or
IPC B64C3/38
or
IPC B64D17/00 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 1 result in range #1 to #1.