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发明名称
METHOD OF BLACK OXIDE TREATING
摘要
申请公布号
PL151010(B2)
申请公布日期
1990.07.31
申请号
PL19880273715
申请日期
1988.07.12
申请人
发明人
分类号
C23C;C25D5/48;C25D11/36;(IPC1-7):C25D5/48
主分类号
C23C
代理机构
代理人
主权项
地址
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