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发明名称
摘要
申请公布号
JPS5922894(Y2)
申请公布日期
1984.07.09
申请号
JP19790081557U
申请日期
1979.06.14
申请人
发明人
分类号
B21D37/04;(IPC1-7):B21D37/04
主分类号
B21D37/04
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