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发明名称
Nontarnish alloy
摘要
申请公布号
US2108047(A)
申请公布日期
1938.02.15
申请号
US19370137912
申请日期
1937.04.20
申请人
INTERNATIONAL SILVER COMPANY
发明人
EGEBERG BIRGER;TINDULA ROY W.
分类号
C22C9/06;C22C19/00
主分类号
C22C9/06
代理机构
代理人
主权项
地址
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