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发明名称
摘要
申请公布号
JPS56169934(U)
申请公布日期
1981.12.15
申请号
JP19810057366U
申请日期
1981.04.21
申请人
发明人
分类号
B21D43/05;B30B13/00;B30B15/00;B30B15/30;(IPC1-7):B21D43/05
主分类号
B21D43/05
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