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High temperature reduction of copper salts
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Patent number 4,192,676
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Issue date Mar 11, 1980
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Cyprus Metallurgical Processes Corporation
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James E. Reynolds
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Zinc recovery by chlorination leach
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Patent number 3,973,949
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Issue date Aug 10, 1976
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Cyprus Metallurgical Processes Corporation
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Duane N. Goens
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Cuprous chloride recovery process
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Patent number 3,972,711
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Issue date Aug 3, 1976
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Cyprus Metallurigical Processes Corporation
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Duane N. Goens
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Axial flow electrolytic cell
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Patent number 3,972,795
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Issue date Aug 3, 1976
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Hazen Research, Inc.
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Duane N. Goens
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C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR