DIFF Subgroup
H01J 37/22 Optical or photographic arrangements associated with the tube
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof > Details > Optical or photographic arrangements associated with the tube
CPC:
Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof (H01J33/00, H01J40/00, H01J41/00, H01J47/00, H01J49/00 take precedence) > Details > Optical or photographic arrangements associated with the tube
Of 3 combined children, 0 exist in both systems.
3 codes are CPC-only extensions.
Child Classifications
Navigate with arrow keys, Enter to open