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发明名称
Improvements in or relating to the prevention of permanent deformation of steel or alloy steel during surface hardening
摘要
申请公布号
GB620516(A)
申请公布日期
1949.03.25
申请号
GB19460029680
申请日期
1946.10.04
申请人
JIRI STIVIN
发明人
分类号
C21D1/06
主分类号
C21D1/06
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