U.S. federal trademark · Serial No. 85918265 · Reg. No. 4509469
boiler stack gas heat recovery systems consisting essentially of a shell, heat transfer media, spray nozzle, fan, pump, heat exchanger and control system; waste water heat recovery systems consisting essentially of a shell, heat exchanger, tubes, manifolds, flanges, pumps and control system; direct fired high efficiency water heating systems consisting essential of a shell, heat transfer media, spray nozzle, burner, pump, gas train, and control system
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.