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发明名称
Improved focus-correcting arrangements for electron beams
摘要
申请公布号
GB871560(A)
申请公布日期
1961.06.28
申请号
GB19600010652
申请日期
1960.03.25
申请人
FERNSEH G.M.B.H.
发明人
分类号
H04N3/26
主分类号
H04N3/26
代理机构
代理人
主权项
地址
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