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发明名称
Cathode-ray tube magnetic focusing
摘要
申请公布号
US2555147(A)
申请公布日期
1951.05.29
申请号
US19450616374
申请日期
1945.09.14
申请人
MEAGHER RALPH E
发明人
MEAGHER RALPH E.
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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