DIFF Subgroup Additional Only
H01J 2237/248 Components associated with the control of the tube
Full Title
Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging > Components associated with the control of the tube
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.
Note: 2 CPC extensions are marked as secondary classification only.