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Water purification process
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Patent number 5,264,128
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Issue date Nov 23, 1993
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Ciba-Geigy Corporation
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Markus Thuer
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Waste air purification process
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Patent number 5,082,475
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Issue date Jan 21, 1992
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Ciba-Geigy Corporation
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Rolf Bentz
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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