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发明名称
摘要
申请公布号
BG22254(A1)
申请公布日期
1977.02.20
申请号
BG19750029110
申请日期
1975.02.28
申请人
发明人
分类号
C25D5/10;(IPC1-7):C25D5/10
主分类号
C25D5/10
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