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Mamoru Hirako
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Yokohama, JP
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Patent Grant
Process for refining gold and apparatus employed therefor
Patent number
4,859,293
Issue date
Aug 22, 1989
Tanaka Kikinzoku Kogyo K.K.
Mamoru Hirako
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...