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发明名称
摘要
申请公布号
JPH0485644(U)
申请公布日期
1992.07.24
申请号
JP19900128946U
申请日期
1990.11.30
申请人
发明人
分类号
H01J27/02;H01J37/073;H01J37/18;H01J49/24;(IPC1-7):H01J37/18
主分类号
H01J27/02
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