Molding process for mold for big gold coin with high embossed pattern
XIANQING LIU, XUEFEI LI, YINGWU LIU, SHUMAO ZHUANG, DAZHONG ZHAO, SHENGLONG WANG, JIANG DONG, LIYUN WANG, JUNCHUAN REN, LIANGHAN FEI, FENGQUAN SUN, LANYING LIN, WEI WU
Year of Publication 21.09.2005
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Year of Publication 21.09.2005
Patent
Method for making large-dimension holed memorial coin (medal) and die thereof
LIU SHUANG, REN JUNCHUAN, DONG JIANG, WU WEI, ZHANG HUANWEN, KANG JINZHE
Year of Publication 17.12.2008
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Year of Publication 17.12.2008
Patent