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申请公布号
JPS59162121(U)
申请公布日期
1984.10.30
申请号
JP19830054472U
申请日期
1983.04.12
申请人
发明人
分类号
B21D31/02;B21D28/34;(IPC1-7):B21D28/34
主分类号
B21D31/02
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