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发明名称
Amplificateur à électrons secondaires
摘要
申请公布号
FR841765(A)
申请公布日期
1939.05.26
申请号
FRD841765
申请日期
1938.08.05
申请人
FERNSEH AKT.-GES.
发明人
分类号
H01J43/04
主分类号
H01J43/04
代理机构
代理人
主权项
地址
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