DIFF Subgroup Additional Only
H01J 2237/2803 characterised by the imaging method
Full Title
Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging > Electron or ion microscopes > Scanning microscopes > characterised by the imaging method
Of 4 combined children, 0 exist in both systems.
4 codes are CPC-only extensions.
Note: 4 CPC extensions are marked as secondary classification only.