CPC Subgroup
G03B 27/47 at different positions of the same sheet, e.g. microfiche
Full Title
Photographic printing apparatus > Projection printing apparatus, e.g. enlarger, copying camera > for automatic sequential copying of different originals, e.g. enlargers, roll film printers (G03B27/34, G03B27/50, G03B27/53 take precedence) > at different positions of the same sheet, e.g. microfiche