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发明名称
摘要
申请公布号
JPH024744(Y2)
申请公布日期
1990.02.05
申请号
JP19820109284U
申请日期
1982.07.19
申请人
发明人
分类号
B21C3/02;B21C3/00;B21F7/00;(IPC1-7):B21F7/00
主分类号
B21C3/02
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