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发明名称
Dispositif producteur d'électrons et son procédé de fabrication
摘要
申请公布号
FR912150(A)
申请公布日期
1946.07.31
申请号
FRD912150
申请日期
1945.02.05
申请人
发明人
ELOUARD LUCIEN
分类号
H01J1/30
主分类号
H01J1/30
代理机构
代理人
主权项
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