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发明名称
摘要
申请公布号
JPS56146357(U)
申请公布日期
1981.11.04
申请号
JP19800043105U
申请日期
1980.04.02
申请人
发明人
分类号
H01J29/48;H01J29/62;(IPC1-7):H01J29/62
主分类号
H01J29/48
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代理人
主权项
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