Duplicating or printing apparatus or machines for office or other commercial purposes, of special types or for particular purposes and not otherwise provided for having forme cylinders carrying a plurality of printing surfaces, or for performing letterpress and lithographic processes selectively or in combination
Duplicating or printing apparatus or machines for office or other commercial purposes, of special types or for particular purposes and not otherwise provided for having forme cylinders carrying a plurality of printing surfaces, or for performing letterpress and lithographic processes selectively or in combination