74673143
Apr 28, 1995
Apr 29, 1997
chemicals for use in waste water and water treatment, namely adsorbents, coagulants, floculents, resins and oxidants and chemical filtering media for use in waste water treatment systems
Chemicalswaste-water and water treatment systems for industrial and commercial use, comprising combinations of filtering units, reverse osmosis units, ion exchange units, pumps, pressure vessels, storage tanks, control panels, valves and sensors and switches therefor, sold as a unit
Environmental Control Apparatus