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Purification of polluted water
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Patent number 4,268,399
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Issue date May 19, 1981
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Phillips Petroleum Company
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E. O. Box
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Polluted water purification
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Patent number 4,072,608
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Issue date Feb 7, 1978
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Phillips Petroleum Company
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Floyd Farha
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Polluted water purification
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Patent number 4,062,772
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Issue date Dec 13, 1977
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Phillips Petroleum Company
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E. O. Box
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Polluted water purification
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Patent number 3,997,440
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Issue date Dec 14, 1976
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Phillips Petroleum Company
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E. O. Box
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Polluted water purification
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Patent number 3,992,295
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Issue date Nov 16, 1976
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Phillips Petroleum Company
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E. O. Box
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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