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发明名称
摘要
申请公布号
JPH0261046(U)
申请公布日期
1990.05.07
申请号
JP19880140419U
申请日期
1988.10.27
申请人
发明人
分类号
H01J29/54;(IPC1-7):H01J29/54
主分类号
H01J29/54
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