Drilldown: Patents
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Patents > National tech categories:
DE 77h.5
& CPCs
:
CPC B64C13/00
or
CPC B64C39/00
& Number of claims:
2-3 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
Use the filters below to narrow your results.
Showing below up to 7 results in range #1 to #7.