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发明名称
摘要
申请公布号
JPH0341851(Y2)
申请公布日期
1991.09.03
申请号
JP19870105862U
申请日期
1987.07.08
申请人
发明人
分类号
B21B39/14;(IPC1-7):B21B39/14
主分类号
B21B39/14
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