David Y. Shimano

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Hull, CA

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Patents Grantslast 30 patents

Information Patent Grant
Ferric chloride leach of a metal-sulphide bearing material
- Patent number 4,902,344
- Issue date Feb 20, 1990
- Canadian Patents & Development Ltd.
- Bernard H. Lucas
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...