DIFF Subgroup Additional Only
H01J 2237/15 Means for deflecting or directing discharge
Full Title
Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging > Means for deflecting or directing discharge
Of 8 combined children, 0 exist in both systems.
8 codes are CPC-only extensions.
Note: 8 CPC extensions are marked as secondary classification only.