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发明名称
Method of improving machinability of steel
摘要
申请公布号
US2779698(A)
申请公布日期
1957.01.29
申请号
US19550545112
申请日期
1955.11.04
申请人
UNITED STATES STEEL CORPORATION
发明人
BAUGHMAN ROBERT W.;GRANGE RAYMOND A.
分类号
C21D1/20
主分类号
C21D1/20
代理机构
代理人
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