Drilldown: Patents
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Patents > National tech categories
:
USPC 267/64.26
or
None
& CPCs
:
CPC B64C25/60
or
CPC B64C35/00
& Number of text pages:
4-50000000
& Number of figures:
1-5 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Use the filters below to narrow your results.
Showing below up to 10 results in range #1 to #10.