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发明名称
AN ANTI-TARNISHING AND HARDENED SILVER ALLOY
摘要
申请公布号
HK1060485(A2)
申请公布日期
2004.07.09
申请号
HK20040100434
申请日期
2004.01.20
申请人
HONG KONG PRODUCTIVITY COUNCIL
发明人
LEE KIN YEUNG;YUN CHEONG TSUI;WING HA CHRISTINA LAM;HIU PING CHU
分类号
C22C;C22C5/06;(IPC1-7):C22C
主分类号
C22C
代理机构
代理人
主权项
地址
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