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发明名称
Improvements in advertising and display devices with moving effect
摘要
申请公布号
GB522179(A)
申请公布日期
1940.06.11
申请号
GB19380035382
申请日期
1938.12.05
申请人
WILLIAM WATTLES SHIGLEY
发明人
分类号
G09F13/00
主分类号
G09F13/00
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