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发明名称
摘要
申请公布号
JPH0510979(Y2)
申请公布日期
1993.03.17
申请号
JP19880116487U
申请日期
1988.09.05
申请人
发明人
分类号
B21D9/01;(IPC1-7):B21D9/01
主分类号
B21D9/01
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代理人
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