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Sludge dewatering system
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Patent number 4,481,114
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Issue date Nov 6, 1984
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International Sludge Reduction Company
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Morris M. Riise
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Sludge dewatering system
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Patent number 4,382,863
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Issue date May 10, 1983
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International Sludge Reduction Company
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Morris M. Riise
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE