75193766
Nov 5, 1996
Aug 4, 1998
heating, ventilating, air conditioning and refrigeration equipment, namely, air-cooled rotary screw chillers, single-stage steam and hot water absorption chillers, two-stage direct fired and steam absorption chillers, air-cooled reciprocating liquid chillers, centrifugal chillers and thirty to forty ton roof top chillers, for residential use
Environmental Control Apparatus