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发明名称
摘要
申请公布号
JPS5115510(B2)
申请公布日期
1976.05.17
申请号
JP19710085736
申请日期
1971.10.27
申请人
发明人
分类号
B21D5/14;B21D5/00;(IPC1-7):B21D5/00
主分类号
B21D5/14
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