CHEMCO
PHOTOGRAPHIC, PHOTOENGRAVING AND PHOTOMECHANICAL APPLIANCES, APPARATUS, MACHINES AND SUPPLIES-NAMELY (GROUP A) FOCUSING SCALES, SCALING SLIDE RULES, T-SQUARES, RATIO SCALES, STRIP-FILM AND SENSITIZED STRIPPING PAPER, (GROUP B) STRIP-FILM ROLL CAMERA, OFFSET CAMERAS, DEPTH GAUGES FOR ENGRAVED PLATES, INTEGRATING PHOTOELECTRIC EXPOSURE METERS, PHOTOGRAPHER'S MAGNIFIERS ETCHER'S MAGNIFIERS, SCREEN SEPARATION GAUGES FOR HALFTONE CAMERAS, CONTROLLED TEMPERATURE DARKROOM SINKS, WATERJACKETED DEVELO...
Expired · February 16, 1950 · 71592548 ·