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Composite materials for fluid treatment
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Patent number 7,201,841
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Issue date Apr 10, 2007
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Water Visions International, Inc.
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Kenneth D. Hughes
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A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
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Membrane based fluid treatment systems
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Patent number 7,186,344
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Issue date Mar 6, 2007
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Water Visions International, Inc.
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Kenneth D. Hughes
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Microbiological water filter
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Patent number 6,957,743
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Issue date Oct 25, 2005
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Watervisions International, Inc.
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Arthur W. Johnston
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Microbiological water filter
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Patent number 6,187,192
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Issue date Feb 13, 2001
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Watervisions International, Inc.
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Arthur W. Johnston
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Microbiological water filtering
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Patent number 6,180,016
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Issue date Jan 30, 2001
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Watervisions International, Inc.
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Arthur W. Johnston
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE