73792253
Apr 10, 1989
APPARATUS AND ARRANGEMENTS FOR ILLUMINATION; HOLDERS FOR KIGHT BULBS AND GAS DISCHARGE LAMPS; RADIATORS; ILLUMINATION INSTALLATIONS; SOCKETS FOR SOURCES OF ILLUMINATION; REFLECTORS; SCREENS AND COVERINGS FOR CONTROLLING A GUIDING OF LIGHT; OPAQUE, REFLECTING, LIGHT-ABSORBING OR LIGHT-TRANSMITTING ENCLOSURES FOR LIGHTS AND LAMPS; INSTALLATION TRACKS FOR LIGHTS; SUPPORT TRACK SYSTEMS FOR LIGHTS; LIGHT SUSPENSIONS; DRAW PULLS; CANOPIES; ENCLOSURE PARTS; LANTERNS; ILLUMINATION ARMATURES; PROJECTORS AND PROJECTOR LAMPS; FILTER AND GLASSES FOR ILLUMINATION APPARATUS AND INSTRUMENTS
Environmental Control Apparatus