CPC Subgroup
G03B 27/42 for automatic sequential copying of the same original (G03B27/34, G03B27/53 take precedence)
Full Title
Photographic printing apparatus > Projection printing apparatus, e.g. enlarger, copying camera > for automatic sequential copying of the same original (G03B27/34, G03B27/53 take precedence)
2 direct subcodes
Child Classifications
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