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发明名称
TUNGSTEN-TANTALUM ALLOY
摘要
申请公布号
CA300951(A)
申请公布日期
1930.06.10
申请号
CAD300951
申请日期
申请人
THE CANADIAN WESTINGHOUSE COMPANY
发明人
JOHN H. RAMAGE
分类号
主分类号
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代理人
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