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Method for the thermal production of metals
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Patent number 4,441,920
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Issue date Apr 10, 1984
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Vereinigte Aluminium-Werke A.G.
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Siegfried Wilkening
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Method of winning aluminum metal from aluminous ore
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Patent number 4,265,716
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Issue date May 5, 1981
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The United States of America as represented by the United States Department o...
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Raouf O. Loutfy
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C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
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Reduction of metal sulfides
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Patent number 4,243,411
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Issue date Jan 6, 1981
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Parlee-Anderson Corporation
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Robert N. Anderson
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3925177
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Patent number 3,925,177
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Issue date Dec 9, 1975
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3909247
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Patent number 3,909,247
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Issue date Sep 30, 1975
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B22 - CASTING POWDER METALLURGY
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3862835
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Patent number 3,862,835
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Issue date Jan 28, 1975
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3784372
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Patent number 3,784,372
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Issue date Jan 8, 1974
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3578436
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Patent number 3,578,436
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Issue date May 11, 1971
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3552946
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Patent number 3,552,946
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Issue date Jan 5, 1971
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B22 - CASTING POWDER METALLURGY
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3535107
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Patent number 3,535,107
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Issue date Oct 20, 1970
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3535108
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Patent number 3,535,108
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Issue date Oct 20, 1970
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...