Zhou Yangsheng

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Beijing, CN

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Patents Applicationslast 30 patents

Information Patent Application
HARDENED COBALT BASED ALLOY JEWELRY AND RELATED METHODS
- Publication number 20130098108
- Publication date Apr 25, 2013
- MATRIX METALS, LLC
- Zhou Yangsheng
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...