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发明名称
摘要
申请公布号
BG20394(A3)
申请公布日期
1975.11.05
申请号
BG19730023015
申请日期
1973.03.16
申请人
发明人
分类号
C23C2/14;C23C2/22;C23C2/38;(IPC1-7):C23C1/14
主分类号
C23C2/14
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代理人
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