ROBERTSON

CAMERAS; SCREEN SELECTORS; SCREEN AND PHOTOGRAPRIC MASK ELIMINATION CASES; FILM CABINETS; FILM HOLDERS; PLATEHOLDERS; MASKING BARS; DIAPHRAGM CONTROL DEVICES; SHUTTER CONTROLS; LENSES; SCREENS; HAND MAGNIFIERS; PHOTOGRAPHIC LIGHTING EQUIPMENT-NAMELY, LAMPS AND REFLECTORS; PRINTING FRAMES; EXTENSION AND COPYBOARD FOCUSING SCALES; AND SPECIALIZED PHOTOGRAPHIC AND DARK ROOM EQUIPMENT-NAMELY, ETCHING MACHINES, PLATE WHIRLERS, AND TABLES FOR RETOUCHING, ETCHING, MAKE-UP AND STRIPPING, AND INKING-UP LITHOGRAPHIC PLATES; ELECTROSTATIC PHOTOGRAPHIC EQUIPMENT-NAMELY, ELECTROSTATIC CAMERAS FOR USE WITH REFLECTED COPY, TRANSPARENCY COPY AND MICROFILM COPY; EQUIPMENT FOR AFFIXING IMAGE TO PLATE; LITHOGRAPHIC MASTERS