IC 009. US 021 023 026 036 038. G & S: electrical controls for industrial and municipal water, waste water and process water stream filtering and treatment equipment
IC 011. US 013 021 023 031 034. G & S: water, waste water and process water stream treatment systems comprised of aerators, mixers, diffusers, filters, and water cooling units; mechanical, gravity, synthetic cloth filters used in industrial and municipal water, waste water and process water stream filtering and treatment equipment
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