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发明名称
摘要
申请公布号
JPS5415334(Y2)
申请公布日期
1979.06.21
申请号
JP19720028414U
申请日期
1972.03.08
申请人
发明人
分类号
B21D55/00;B21D37/04;B30B15/00;B30B15/02;B30B15/28;F16P3/00;(IPC1-7):B30B15/28
主分类号
B21D55/00
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代理人
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