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发明名称
摘要
申请公布号
JPS6245770(Y2)
申请公布日期
1987.12.08
申请号
JP19820076200U
申请日期
1982.05.26
申请人
发明人
分类号
B21B39/00;B21B39/02;B21C47/16;B21C47/22;B21C47/34;(IPC1-7):B21C47/22
主分类号
B21B39/00
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