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发明名称
摘要
申请公布号
JPS63174904(U)
申请公布日期
1988.11.14
申请号
JP19870066359U
申请日期
1987.05.01
申请人
发明人
分类号
B21B31/18;B21B31/02;(IPC1-7):B21B31/18
主分类号
B21B31/18
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代理人
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