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发明名称
摘要
申请公布号
JPS554921(Y2)
申请公布日期
1980.02.05
申请号
JP19730100662U
申请日期
1973.08.29
申请人
发明人
分类号
H01J23/14;H01J23/15;(IPC1-7):H01J23/14
主分类号
H01J23/14
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代理人
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