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发明名称
摘要
申请公布号
JPS63133810(U)
申请公布日期
1988.09.01
申请号
JP19870025590U
申请日期
1987.02.25
申请人
发明人
分类号
B21C47/00;(IPC1-7):B21C47/00
主分类号
B21C47/00
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代理人
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