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发明名称
摘要
申请公布号
JPS6222264(Y2)
申请公布日期
1987.06.06
申请号
JP19820048155U
申请日期
1982.04.05
申请人
发明人
分类号
B21D7/16;B21D7/025;(IPC1-7):B21D7/025
主分类号
B21D7/16
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