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发明名称
摘要
申请公布号
JPS63170002(U)
申请公布日期
1988.11.04
申请号
JP19870062635U
申请日期
1987.04.27
申请人
发明人
分类号
B21B31/07;(IPC1-7):B21B31/07
主分类号
B21B31/07
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代理人
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