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发明名称
摘要
申请公布号
JPS6347382(Y2)
申请公布日期
1988.12.07
申请号
JP19820089819U
申请日期
1982.06.15
申请人
发明人
分类号
B21D37/14;B22D17/26;(IPC1-7):B21D37/14
主分类号
B21D37/14
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