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发明名称
Improvements relating to electron-optical devices
摘要
申请公布号
GB855989(A)
申请公布日期
1960.12.14
申请号
GB19590005592
申请日期
1959.02.18
申请人
N. V. OPTISCHE INDUSTRIE "DE OUDE DELFT"
发明人
分类号
H01J31/50
主分类号
H01J31/50
代理机构
代理人
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地址
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