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发明名称
摘要
申请公布号
JPS6449324(U)
申请公布日期
1989.03.27
申请号
JP19870142635U
申请日期
1987.09.17
申请人
发明人
分类号
B21D19/08;H01J9/14;(IPC1-7):B21D19/08
主分类号
B21D19/08
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