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发明名称
摘要
申请公布号
JPH0534814(Y2)
申请公布日期
1993.09.03
申请号
JP19890111563U
申请日期
1989.09.22
申请人
发明人
分类号
B21D28/24;B21D28/34;B21D28/36;(IPC1-7):B21D28/34
主分类号
B21D28/24
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代理人
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