DIFF Subgroup
G03F 3/06 by masking
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Colour separation; Correction of tonal value > by photographic means > by masking
CPC:
Colour separation; Correction of tonal value (photographic copying apparatus in general G03B) > by photographic means > by masking
No child classifications to compare. This is a leaf node in both IPC and CPC.