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Performance-based control system
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Patent number 6,510,368
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Issue date Jan 21, 2003
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Ashland Inc.
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Edward S. Beardwood
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Performance-based control system
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Patent number 5,855,791
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Issue date Jan 5, 1999
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Ashland Chemical Company
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George Hays
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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