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发明名称
Improvements in display devices
摘要
申请公布号
GB522819(A)
申请公布日期
1940.06.27
申请号
GB19380036839
申请日期
1938.12.17
申请人
WILLIAM JACK COX
发明人
分类号
G09F11/23
主分类号
G09F11/23
代理机构
代理人
主权项
地址
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