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Scrubbing backwash filter
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Patent number 11,291,932
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Issue date Apr 5, 2022
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William Bloomfield
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Filtration device
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Patent number 11,173,429
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Issue date Nov 16, 2021
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Nihon Genryo Co., Ltd.
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Yasuhiro Saito
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Scrubbing backwash filter
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Patent number 10,888,806
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Issue date Jan 12, 2021
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William Bloomfield
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Washbox
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Patent number 10,702,806
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Issue date Jul 7, 2020
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Nexom (US), Inc.
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Remembrance L. Newcombe
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Filter structure
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Patent number 9,884,271
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Issue date Feb 6, 2018
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Szu-Ying Chen
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Fluid filtration system
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Patent number 9,610,527
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Issue date Apr 4, 2017
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Thomas Scott Manaugh
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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3594991
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Patent number 3,594,991
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Issue date Jul 27, 1971
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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3557955
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Patent number 3,557,955
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Issue date Jan 26, 1971
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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3550774
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Patent number 3,550,774
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Issue date Dec 29, 1970
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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2633243
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Patent number 2,633,243
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Issue date Mar 31, 1953
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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2595740
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Patent number 2,595,740
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Issue date May 6, 1952
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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2022524
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Patent number 2,022,524
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Issue date Nov 26, 1935
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL