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发明名称
摘要
申请公布号
JPH0228596(Y2)
申请公布日期
1990.07.31
申请号
JP19830149374U
申请日期
1983.09.27
申请人
发明人
分类号
H01J23/087;H01J23/08;H01J23/40;H01J23/54;H01J25/00;H01J25/02;(IPC1-7):H01J25/00
主分类号
H01J23/087
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