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发明名称
Method of improving copper or copper alloys and hardener for use therein
摘要
申请公布号
US1777174(A)
申请公布日期
1930.09.30
申请号
US19290377338
申请日期
1929.07.10
申请人
P-M-G METAL TRUST LIMITED
发明人
MACHIN WALTER;GOUDIELOCK WILLIAM BOUCH O'BRIEN
分类号
C22C9/00
主分类号
C22C9/00
代理机构
代理人
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