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发明名称
Advertising and display sign
摘要
申请公布号
GB447078(A)
申请公布日期
1936.05.12
申请号
GB19340034726
申请日期
1934.12.03
申请人
JOHN ROBERT CLARKSON
发明人
分类号
G09F13/00
主分类号
G09F13/00
代理机构
代理人
主权项
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