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经营范围
发明名称
Improvements in or relating to display apparatus
摘要
申请公布号
GB416431(A)
申请公布日期
1934.09.14
申请号
GB19330007714
申请日期
1933.03.14
申请人
LILLIE DUVECK;SOL ELLIS DUVECK
发明人
分类号
G09F11/00
主分类号
G09F11/00
代理机构
代理人
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