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Ernest Peters
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Vancouver, British Columbia, CA
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last 30 patents
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Preferential hydrometallurgical conversion of zinc sulfide to sulfa...
Patent number
5,711,922
Issue date
Jan 27, 1998
Robert N. O'Brien
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...