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发明名称
摘要
申请公布号
JPS60164(Y2)
申请公布日期
1985.01.07
申请号
JP19810056560U
申请日期
1981.04.21
申请人
发明人
分类号
B21B31/18;B21B13/14;(IPC1-7):B21B31/18
主分类号
B21B31/18
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代理人
主权项
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