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Flow directors
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Patent number 9,546,822
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Issue date Jan 17, 2017
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Akeel Ali Wannas
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F28 - HEAT EXCHANGE IN GENERAL
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2326243
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Patent number 2,326,243
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Issue date Aug 10, 1943
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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2324593
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Patent number 2,324,593
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Issue date Jul 20, 1943
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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2216902
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Patent number 2,216,902
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Issue date Oct 8, 1940
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL