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发明名称
摘要
申请公布号
JPS4725970(Y1)
申请公布日期
1972.08.11
申请号
JP19670016626U
申请日期
1967.02.28
申请人
发明人
分类号
(IPC1-7):H01J29/87
主分类号
(IPC1-7):H01J29/87
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代理人
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