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发明名称
摘要
申请公布号
JPS56166657(U)
申请公布日期
1981.12.10
申请号
JP19800065877U
申请日期
1980.05.14
申请人
发明人
分类号
H01J23/26;H01J23/30;(IPC1-7):H01J23/30
主分类号
H01J23/26
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代理人
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