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发明名称
摘要
申请公布号
JPS5634880(Y2)
申请公布日期
1981.08.17
申请号
JP19760062230U
申请日期
1976.05.18
申请人
发明人
分类号
B21D37/00;B30B13/00;B30B15/28;F16P7/00;(IPC1-7):B30B15/28
主分类号
B21D37/00
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