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发明名称
摘要
申请公布号
JPS62131354(U)
申请公布日期
1987.08.19
申请号
JP19860019463U
申请日期
1986.02.12
申请人
发明人
分类号
H01J29/48;H01J29/50;H01J29/82;(IPC1-7):H01J29/48
主分类号
H01J29/48
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代理人
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