Drilldown: Patents
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Patents > National tech categories
:
FR 6.2
or
FR 6.4
or
USPC 244/80
& IPCs:
IPC C25B1/14
& Cites these patents
:
1
or
USPC 244/87
& Citations from after 1930:
None ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 1 result in range #1 to #1.