LUMINESCENT LIGHT SOURCES, TELEVISIONS, VIDEO MONITORS, COMPUTER MONITORS, SEMICONDUCTOR FILMS, LUMINESCENT DISPLAYS, LIGHT ENGINES, ELECTRO-OPTICAL SENSORS, OPTICAL SENSORS, PROJECTION CATHODE RAY TUBES, LUMINESCENT PROJECTORS, DIRECT VIEW FLAT CATHODE RAY TUBES, LIGHT VALVE DISPLAYS, ENGINEERING WORKSTATION MONITORS, LUMINESCENT SIGNS, INFORMATION STORAGE DEVICES, LIGHT VALVES, AND COMMUNICATIONS DEVICES
Electrical and Scientific Apparatus