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Heat exchangers and evaporators
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Patent number 4,119,485
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Issue date Oct 10, 1978
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Austral-Erwin Engineering Company
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Ransome W. Erwin
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F24 - HEATING RANGES VENTILATING
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Heat exchange method
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Patent number 4,082,140
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Issue date Apr 4, 1978
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Austral-Erwin Engineering Company
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Ransome W. Erwin
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F24 - HEATING RANGES VENTILATING
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3891496
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Patent number 3,891,496
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Issue date Jun 24, 1975
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F24 - HEATING RANGES VENTILATING
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3856631
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Patent number 3,856,631
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Issue date Dec 24, 1974
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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3830706
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Patent number 3,830,706
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Issue date Aug 20, 1974
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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3821089
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Patent number 3,821,089
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Issue date Jun 28, 1974
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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3788953
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Patent number 3,788,953
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Issue date Jan 29, 1974
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F28 - HEAT EXCHANGE IN GENERAL
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3736235
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Patent number 3,736,235
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Issue date May 29, 1973
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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3731801
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Patent number 3,731,801
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Issue date May 8, 1973
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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3692634
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Patent number 3,692,634
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Issue date Sep 19, 1972
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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3691020
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Patent number 3,691,020
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Issue date Sep 12, 1972
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C07 - ORGANIC CHEMISTRY
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3689366
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Patent number 3,689,366
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Issue date Sep 5, 1972
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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3681434
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Patent number 3,681,434
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Issue date Aug 1, 1972
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C07 - ORGANIC CHEMISTRY
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3642583
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Patent number 3,642,583
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Issue date Feb 15, 1972
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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3640850
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Patent number 3,640,850
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Issue date Feb 8, 1972
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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3635800
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Patent number 3,635,800
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Issue date Jan 18, 1972
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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3634043
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Patent number 3,634,043
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Issue date Jan 11, 1972
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C01 - INORGANIC CHEMISTRY
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3627646
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Patent number 3,627,646
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Issue date Dec 14, 1971
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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3619378
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Patent number 3,619,378
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Issue date Nov 9, 1971
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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3595759
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Patent number 3,595,759
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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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3592743
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Patent number 3,592,743
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Issue date Jul 13, 1971
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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3583895
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Patent number 3,583,895
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Issue date Jun 8, 1971
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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3567591
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Patent number 3,567,591
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Issue date Mar 2, 1971
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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3519054
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Patent number 3,519,054
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Issue date Jul 7, 1970
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C07 - ORGANIC CHEMISTRY
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3515645
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Patent number 3,515,645
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Issue date Jun 2, 1970
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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3503853
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Patent number 3,503,853
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Issue date Mar 31, 1970
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL