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发明名称
摘要
申请公布号
JPS57152759(U)
申请公布日期
1982.09.25
申请号
JP19810040030U
申请日期
1981.03.20
申请人
发明人
分类号
H01J23/10;H01J23/20;H01J23/213;(IPC1-7):H01J23/213
主分类号
H01J23/10
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代理人
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