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Waste water treatment
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Patent number 5,807,484
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Issue date Sep 15, 1998
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Real Couture
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Media for filtration
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Patent number 5,779,886
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Issue date Jul 14, 1998
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Real Couture
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE