CPC Subgroup
G03B 27/6214 Full Title
Photographic printing apparatus > Projection printing apparatus, e.g. enlarger, copying camera > Details > Holders for the original (G03B27/53 takes precedence )
G03B 27/6214 Photographic printing apparatus > Projection printing apparatus, e.g. enlarger, copying camera > Details > Holders for the original (G03B27/53 takes precedence )