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发明名称
摘要
申请公布号
JPS5925566(Y2)
申请公布日期
1984.07.26
申请号
JP19810066250U
申请日期
1981.05.08
申请人
发明人
分类号
B21D7/06;B21D7/024;(IPC1-7):B21D7/024
主分类号
B21D7/06
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