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发明名称
摘要
申请公布号
JPH0538524(Y2)
申请公布日期
1993.09.29
申请号
JP19890026175U
申请日期
1989.03.09
申请人
发明人
分类号
H01J23/54;H01P5/08;(IPC1-7):H01J23/54
主分类号
H01J23/54
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