Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
CPC Subgroup Additional Only
H01J 2237/182

Obtaining or maintaining desired pressure

Full Title

Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging > Vacuum control means > Obtaining or maintaining desired pressure

1 direct subcode

Child Classifications

Navigate with arrow keys, Enter to open