75035812
Dec 22, 1995
Mar 30, 1999
electro and pneumatic controls for industrial and municipal water, waste water and process water stream filtering and treatment equipment
Electrical and Scientific Apparatuswater, waste water and process water stream filtering systems comprised of a mechanical gravity filter and an automatic backwash device; water, waste water and process water stream filtering and treatment systems comprised of aerators, mixers, diffusers, filters, basin baffles, flow decanters, control wires and water cooling units
Environmental Control Apparatus