DIFF Subgroup
G03C 7/30541 Full Title
Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes (diffusion transfer processes G03C8/00) > Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials > Substances liberating photographically active agents, e.g. development-inhibiting releasing couplers (G03C7/388 takes precedence )
Of 5 combined children, 0 exist in both systems.
5 codes are CPC-only extensions.
Note: 2 CPC extensions are marked as secondary classification only.