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发明名称
Electron-optical device
摘要
申请公布号
GB622484(A)
申请公布日期
1949.05.03
申请号
GB19460024067
申请日期
1946.08.13
申请人
SOCIETE D'APPLICATIONS TELEPHONIQUES
发明人
分类号
H01J31/50
主分类号
H01J31/50
代理机构
代理人
主权项
地址
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