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发明名称
Improvements in and relating to advertising devices
摘要
申请公布号
GB362398(A)
申请公布日期
1931.11.30
申请号
GB19300016177
申请日期
1930.05.26
申请人
ROBERT BAUMANN
发明人
分类号
G09F13/14
主分类号
G09F13/14
代理机构
代理人
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