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发明名称
摘要
申请公布号
JPS5862543(U)
申请公布日期
1983.04.27
申请号
JP19810157026U
申请日期
1981.10.23
申请人
发明人
分类号
H01J29/45;H01J29/86;H01J29/92;H01J31/46;(IPC1-7):H01J29/92
主分类号
H01J29/45
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