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发明名称
CATHODE A EMISSION DE CHAMP ET SON PROCEDE DE REALISATION
摘要
申请公布号
FR2319967(A1)
申请公布日期
1977.02.25
申请号
FR19760021762
申请日期
1976.07.16
申请人
HITACHI LTD
发明人
分类号
H01J1/304;H01J9/02;H01J9/12;(IPC1-7):H01J1/30;H01J29/04
主分类号
H01J1/304
代理机构
代理人
主权项
地址
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