74312547
Sep 10, 1992
Nov 2, 1993
environmental control apparatus; namely, incinerators, fume burners, ash pits and removers, feeders and loaders, hearths, combustion chambers, reburn tunnels, dampers, boilers, gas recirculators and separators, economizers, heat exchangers, gas scrubbers and filtering units, smokestacks, flues, pollutant emission monitors and induced draft fans
Environmental Control Apparatus