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发明名称
摘要
申请公布号
JP3006744(B2)
申请公布日期
2000.02.07
申请号
JP19930237901
申请日期
1993.09.24
申请人
发明人
分类号
B21C23/21;B21C23/32;B30B15/00;(IPC1-7):B21C23/32
主分类号
B21C23/21
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