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发明名称
摘要
申请公布号
JPH0228595(Y2)
申请公布日期
1990.07.31
申请号
JP19830173533U
申请日期
1983.11.09
申请人
发明人
分类号
H01J23/40;H01J23/14;(IPC1-7):H01J23/40
主分类号
H01J23/40
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代理人
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