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发明名称
摘要
申请公布号
JPS55104242(U)
申请公布日期
1980.07.21
申请号
JP19790003781U
申请日期
1979.01.16
申请人
发明人
分类号
H01J5/50;H01J5/56;(IPC1-7):H01J5/56
主分类号
H01J5/50
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代理人
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