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发明名称
摘要
申请公布号
JPS5646228(B2)
申请公布日期
1981.10.31
申请号
JP19740148097
申请日期
1974.12.25
申请人
发明人
分类号
H01J29/74;H01J29/78
主分类号
H01J29/74
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代理人
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