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发明名称
摘要
申请公布号
JPH0315233(Y2)
申请公布日期
1991.04.03
申请号
JP19870008839U
申请日期
1987.01.23
申请人
发明人
分类号
B21J13/03;B21J13/14;B21K31/00;(IPC1-7):B21J13/03
主分类号
B21J13/03
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