75062411
Feb 23, 1996
Dec 30, 1997
machines used in the industrial and municipal water and wastewater treatment field, namely, extractors for extracting liquids from slurry, classifiers, mixed oxidant disinfectors, sludge mixers, flotation cells and columns, dissolved gas flotation machines, screw presses, attrition machines, thickeners, clarifiers, aerators, gravity belt concentrators, travelling screens, biological reactors, digesters, belt presses, diffusers, flocculators, sludge collectors and lime slakers
Machinerydrum filters, discs filters, heavy media separators used for filtering particles from liquids, vacuum filters, granular media filters, low head filters, pressure filters for chemical pulp processing, all for use in industrial and municipal water and wastewater treatment
Environmental Control Apparatus