Drilldown: Patents
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Patents > National tech categories :
FR 6.2 or
FR 6.4 or
HU V/h or
USPC 244/80
& IPCs:
IPC C25B1/14
& Cites these patents :
1 or
USPC 244/87
& Citations from after 1930:
None
Use the filters below to narrow your results.
Showing below up to 1 result in range #1 to #1.