71600119
Jul 1, 1950
Jul 1, 1952
PHOTOGRAPHIC, PHOTOENGRAVING AND PHOTOMECHANICAL SUPPLIES-NAMELY, PIGMENT PAPER, CARBON TISSUE AND CARBRO PAPER WHICH MAY BE RENDERED PHOTOSENSITIVE FOR USE IN MAKING ROTARY PHOTOGRAVURE AND SILK SCREEN PRINTING MEMBERS AND IN MAKING PRINTS BY THE CARBRO PROCESS
Building Construction and Repair