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发明名称
Electron-optical device
摘要
申请公布号
US2950405(A)
申请公布日期
1960.08.23
申请号
US19590793357
申请日期
1959.02.16
申请人
N.V. OPTISCHE INDUSTRIE DE OUDE DELFT
发明人
POOLE JAN BART LE
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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