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Shower water filter assembly
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Patent number 10,737,203
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Issue date Aug 11, 2020
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David K. Farley
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Filtration apparatus
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Patent number 8,012,359
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Issue date Sep 6, 2011
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KCC Group Limited
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David John Parkinson
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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2064511
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Patent number 2,064,511
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Issue date Dec 15, 1936
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL