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3495254
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Patent number 3,495,254
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Issue date Feb 10, 1970
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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3245543
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Patent number 3,245,543
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Issue date Apr 12, 1966
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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3140200
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Patent number 3,140,200
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Issue date Jul 7, 1964
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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3036713
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Patent number 3,036,713
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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3006474
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Patent number 3,006,474
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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2894637
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Patent number 2,894,637
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Issue date Jul 14, 1959
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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2889927
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Patent number 2,889,927
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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2852138
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Patent number 2,852,138
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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2780362
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Patent number 2,780,362
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Issue date Feb 5, 1957
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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2713027
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Patent number 2,713,027
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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2678730
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Patent number 2,678,730
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Issue date May 18, 1954
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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2650707
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Patent number 2,650,707
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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2599782
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Patent number 2,599,782
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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2589298
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Patent number 2,589,298
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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2536729
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Patent number 2,536,729
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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2509695
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Patent number 2,509,695
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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2488851
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Patent number 2,488,851
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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2483648
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Patent number 2,483,648
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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2473297
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Patent number 2,473,297
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Issue date Jun 14, 1949
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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2467409
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Patent number 2,467,409
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Issue date Apr 19, 1949
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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2467003
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Patent number 2,467,003
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Issue date Apr 12, 1949
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL