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发明名称
摘要
申请公布号
JP3184507(B2)
申请公布日期
2001.07.09
申请号
JP19990199149
申请日期
1999.07.13
申请人
发明人
分类号
B21D7/024;B21F1/00;B21F33/00;(IPC1-7):B21F33/00
主分类号
B21D7/024
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代理人
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