U.S. federal trademark · Serial No. 77783399 · Reg. No. 3762703
PACKAGED ENERGY RECOVERY SYSTEM COMPRISING AIR-TO-AIR AND PROCESS HEAT EXCHANGERS, BLOWERS, MOTORS, DRIVES, CONTROLS, DAMPERS, INDIRECT EVAPORATIVE COOLERS, HEATING AND COOLING COILS, WATER WASH FOR HEAT EXCHANGERS, HUMIDIFIERS AND SMOKE DETECTORS, SOLD AS A UNIT
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