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发明名称
摘要
申请公布号
JPS557302(Y2)
申请公布日期
1980.02.19
申请号
JP19760068907U
申请日期
1976.05.31
申请人
发明人
分类号
B26F1/14;B21D28/14;B21D28/34;B21D37/04;B21D37/14;(IPC1-7):B21D28/34
主分类号
B26F1/14
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代理人
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