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发明名称
摘要
申请公布号
JPH0337744(U)
申请公布日期
1991.04.11
申请号
JP19890098078U
申请日期
1989.08.22
申请人
发明人
分类号
H01J29/82;(IPC1-7):H01J29/82
主分类号
H01J29/82
代理机构
代理人
主权项
地址
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