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发明名称
Improvements in or relating to advertising or display apparatus
摘要
申请公布号
GB324297(A)
申请公布日期
1930.01.23
申请号
GB19290012279
申请日期
1929.04.20
申请人
JOHN SHANNON, JUNIOR;JOHN HENRY LIPMAN
发明人
分类号
G09F11/29
主分类号
G09F11/29
代理机构
代理人
主权项
地址
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