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发明名称
STEEL FOR CHEMICAL-HEAT TREATMENT
摘要
申请公布号
PL117273(B3)
申请公布日期
1981.07.31
申请号
PL19770203182
申请日期
1977.12.21
申请人
发明人
分类号
C22C;C22C38/44;(IPC1-7):C22C38/44
主分类号
C22C
代理机构
代理人
主权项
地址
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