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发明名称
摘要
申请公布号
JPS5331927(U)
申请公布日期
1978.03.18
申请号
JP19760113572U
申请日期
1976.08.25
申请人
发明人
分类号
H01J29/64;H01J29/58;(IPC1-7):H01J29/58
主分类号
H01J29/64
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