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发明名称
摘要
申请公布号
JPS5523706(Y2)
申请公布日期
1980.06.06
申请号
JP19750060632U
申请日期
1975.05.07
申请人
发明人
分类号
B21D43/02;B21D43/00;B30B15/00;(IPC1-7):B21D43/00
主分类号
B21D43/02
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代理人
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