DIFF Subgroup
G21G 1/001 Full Title
Arrangements for converting chemical elements by electromagnetic radiation, corpuscular radiation or particle bombardment, e.g. producing radioactive isotopes (separation of different isotopes of the same element B01D59/00)
Of 16 combined children, 0 exist in both systems.
16 codes are CPC-only extensions.
Note: 16 CPC extensions are marked as secondary classification only.