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发明名称
摘要
申请公布号
JPS6456137(U)
申请公布日期
1989.04.07
申请号
JP19870151032U
申请日期
1987.10.01
申请人
发明人
分类号
H01J23/027;(IPC1-7):H01J23/027
主分类号
H01J23/027
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代理人
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