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发明名称
Method and apparatus for differential quenching of heat treated metallic articles
摘要
申请公布号
US2890975(A)
申请公布日期
1959.06.16
申请号
US19550503935
申请日期
1955.04.26
申请人
CATERPILLAR TRACTOR CO.
发明人
LENZ WALTER HAROLD
分类号
C21D1/62;C21D1/667
主分类号
C21D1/62
代理机构
代理人
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