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发明名称
摘要
申请公布号
JPS5881034(U)
申请公布日期
1983.06.01
申请号
JP19810174566U
申请日期
1981.11.24
申请人
发明人
分类号
B21D37/18;B21D37/10;B30B15/00;B30B15/04;(IPC1-7):B21D37/18
主分类号
B21D37/18
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