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发明名称
Improvements in or relating to advertising devices
摘要
申请公布号
GB460757(A)
申请公布日期
1937.02.03
申请号
GB19360018071
申请日期
1936.06.30
申请人
CARL LUDWIG ROHDEN
发明人
分类号
G09F11/23
主分类号
G09F11/23
代理机构
代理人
主权项
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