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发明名称
摘要
申请公布号
JPS54163866(U)
申请公布日期
1979.11.16
申请号
JP19780061132U
申请日期
1978.05.09
申请人
发明人
分类号
H01J7/18;H01J29/94;(IPC1-7):H01J29/94
主分类号
H01J7/18
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