DIFF Subgroup
G03G 21/1803 Full Title
Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge > Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements > using a processing cartridge
Of 6 combined children, 0 exist in both systems.
6 codes are CPC-only extensions.