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发明名称
摘要
申请公布号
JPH03118548(U)
申请公布日期
1991.12.06
申请号
JP19900027256U
申请日期
1990.03.19
申请人
发明人
分类号
H01J61/35;(IPC1-7):H01J61/35
主分类号
H01J61/35
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代理人
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