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发明名称
摘要
申请公布号
JPS55109255(U)
申请公布日期
1980.07.31
申请号
JP19790009795U
申请日期
1979.01.29
申请人
发明人
分类号
H01J1/26;H01J1/20;(IPC1-7):H01J1/26
主分类号
H01J1/26
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代理人
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