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发明名称
摘要
申请公布号
JPH0511310(U)
申请公布日期
1993.02.12
申请号
JP19910064688U
申请日期
1991.07.19
申请人
发明人
分类号
H01J61/50;H01J61/34;(IPC1-7):H01J61/34
主分类号
H01J61/50
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