GESTETNER

CHEMICAL PRODUCTS USED IN PRINTING AND DUPLICATING-NAMELY, ACIDS AND SOLUTIONS OF ETCHING FLUIDS FOR USE IN THE FOUNTAINS OF DUPLICATING APPARATUS AND ON METAL PLATES; [ PLATE GUM DESENSITISERS AND DEVELOPERS, ] ERASING FLUID, CORRECTING FLUID FOR STENCILS [ AND PRINT SOLUTION FOR MAKING PLATES RECEPTIVE TO PRINTING INKS ]