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发明名称
摘要
申请公布号
JP2570380(B2)
申请公布日期
1997.01.08
申请号
JP19880113595
申请日期
1988.05.12
申请人
发明人
分类号
B21D39/06;B21D47/00;B21D47/01;B23K33/00;(IPC1-7):B21D47/01
主分类号
B21D39/06
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