Filed: November 25, 1988 LIQUID FORMULATION WHICH INHIBITS THE DEVELOPMENT OF CORROSION, SCALE AND DEPOSITS ON A COOLING TOWER Owned by:HVC INC. Serial Number:73765782
Filed: March 7, 1991 engineering and technical services provided to operator of HVAC (Heating Ventilating and air conditioning) equipment to… Owned by:HVC INC. Serial Number:74146035
Filed: March 7, 1991 computer hardware and software employed in testing the functions of chilling systems in cooling equipment for use in industrial… Owned by:HVC INC. Serial Number:74146036
Filed: June 9, 1992 engineering services provided to operators of HVAC (heating, ventilating, and air conditioning) equipment to evaluate the… Owned by:HVC INC. Serial Number:74283169