DIFF Subgroup
G03F 3/108 Full Title
Colour separation; Correction of tonal value (photographic copying apparatus in general G03B) > Checking the colour or tonal value of separation negatives or positives
G03F 3/108 Colour separation; Correction of tonal value (photographic copying apparatus in general G03B) > Checking the colour or tonal value of separation negatives or positives