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发明名称
摘要
申请公布号
JPS5847821(B2)
申请公布日期
1983.10.25
申请号
JP19760013208
申请日期
1976.02.12
申请人
HITACHI LTD
发明人
NAKAZATO KOICHI
分类号
H01J9/227;H01J29/20;H01J29/32
主分类号
H01J9/227
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