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经营范围
发明名称
Improvements in and relating to displaying
摘要
申请公布号
GB715490(A)
申请公布日期
1954.09.15
申请号
GB19510029283
申请日期
1951.12.13
申请人
ETHEL MARY CORDING
发明人
分类号
A47F7/18
主分类号
A47F7/18
代理机构
代理人
主权项
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