Light Radiation Equipment, Such as Cameras and Projection Devices for Photo-Film and X-Ray Photographs; Spare Parts and Accessories for Light Radiation Equipment, Such as Tripods, Tripod Heads, Copy and Projector Enlarging Devices, Negative Holders, Range Finders, and Photo-Electric Cells for the Purpose of Measuring Units of Light, Photo Flood Lights, and Induction Type and Electronic Flash Equipment, Light Filters, Lenses, Shutters and Shutter Release Devices, Projection Screens, Slide and Positive Film Mounts and Appropriate Containers Thereof, Copy and Picture Frames; Developing and Copying Devices, as Well as Darkroom Equipment, Such as Trays, Developing Tanks, Deep Tanks and Devices, Washing Apparatus, Squeegee Devices for the Purpose of Flattening of Prints or Positives, Drying Cabinets, Trimmers, Numbering Devices for Sensitized Plates, Films and Papers, Clips, Plate Racks, Print Tongs, Measuring Containers, Pails, Darkroom Safe-Lights and Lamps; Sensitized Materials Such as Plates, Films and Papers