74516467
Apr 25, 1994
Apr 15, 1997
air conditioning, air-purifying and ventilating and clean room apparatus, namely negative and positive rigid and flexible isolators, drug dispensing cabinets, radio pharmaceutical dispensing cabinets, microbiological safety cabinets, contained flow cabinets, horizontal and vertical laminar flow cabinets and enclosures, powder control booths, fume cupboards, chemical work stations, clean air enclosures, clean rooms
Environmental Control Apparatus