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发明名称
摘要
申请公布号
JPS57165325(U)
申请公布日期
1982.10.18
申请号
JP19810051924U
申请日期
1981.04.13
申请人
发明人
分类号
B21D28/36;B21F1/02;(IPC1-7):B21D28/36
主分类号
B21D28/36
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