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经营范围
发明名称
High-speed steel
摘要
申请公布号
US2185619(A)
申请公布日期
1940.01.02
申请号
US19390278903
申请日期
1939.06.13
申请人
FIRTH-STERLING STEEL COMPANY
发明人
WELCH ELMER B.;FIRTH LEWIS GERALD
分类号
C22C38/12
主分类号
C22C38/12
代理机构
代理人
主权项
地址
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