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发明名称
摘要
申请公布号
JP3155734(B2)
申请公布日期
2001.04.16
申请号
JP19970311156
申请日期
1997.10.28
申请人
发明人
分类号
B21C23/21;(IPC1-7):B21C23/21
主分类号
B21C23/21
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