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发明名称
摘要
申请公布号
JPH0318917(U)
申请公布日期
1991.02.25
申请号
JP19890079663U
申请日期
1989.07.06
申请人
发明人
分类号
B21D28/00;B21D28/14;H01L23/50;(IPC1-7):B21D28/00
主分类号
B21D28/00
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代理人
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