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发明名称
Improvements in beam centering devices for cathode ray tubes
摘要
申请公布号
GB670021(A)
申请公布日期
1952.04.09
申请号
GB19490004446
申请日期
1949.02.18
申请人
PATRICK RICHARD JAMES COURT;PYE LIMITED
发明人
分类号
H01J29/54
主分类号
H01J29/54
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代理人
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