73660875
May 14, 1987
Jun 28, 1988
LUMINOUS ADVERTISING SIGNS; PHOTOGRAPHIC PROJECTORS AND PARTS THEREFOR
Electrical and Scientific ApparatusINCANDESCENT AND GAS DISCHARGE LIGHTS; ELECTRIC LIGHT BULBS AND LIGHT SOCKETS, LAMP REFLECTORS, LIGHT-GUIDING LOUVERS; ELECTRIC LAMP PARTS, NAMELY, HOUSING AND HOUSING PARTS, DRAWBARS, HOODS, LANTERNS AND FITTINGS; FILTERS AND LENSES FOR FLOODLIGHTS AND SPOTLIGHTS
Environmental Control ApparatusDESIGN SERVICES IN THE FIELD OF SELECTING LIGHT SOURCES FOR OBTAINING AN OPTIMUM DISTRIBUTION OF LIGHT
Computer and Scientific