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发明名称
摘要
申请公布号
JPH0550649(U)
申请公布日期
1993.07.02
申请号
JP19910109254U
申请日期
1991.12.09
申请人
发明人
分类号
H01J49/10;H01J49/26;(IPC1-7):H01J49/10
主分类号
H01J49/10
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代理人
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