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发明名称
Method of heat treating nitrogenised alloy steel articles
摘要
申请公布号
GB338315(A)
申请公布日期
1930.11.20
申请号
GB19290031751
申请日期
1929.10.18
申请人
ROBERT SERGESON
发明人
分类号
C21D1/78;C23C8/80
主分类号
C21D1/78
代理机构
代理人
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地址
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