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发明名称
摘要
申请公布号
JPS5924454(Y2)
申请公布日期
1984.07.19
申请号
JP19780128416U
申请日期
1978.09.19
申请人
发明人
分类号
B21B28/02;B24B47/10
主分类号
B21B28/02
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