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发明名称
Amplificateur à électrons secondaires
摘要
申请公布号
FR837484(A)
申请公布日期
1939.02.10
申请号
FRD837484
申请日期
1938.05.03
申请人
FERNSEH AKT.-GES.
发明人
分类号
H01J43/08;H01J43/28;H04R1/02;H04R9/02;H04R9/04
主分类号
H01J43/08
代理机构
代理人
主权项
地址
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