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发明名称
Perfectionnements aux dispositifs d'information, de publicité, ou similaires
摘要
申请公布号
FR994279(A)
申请公布日期
1951.11.14
申请号
FRD994279
申请日期
1949.09.01
申请人
发明人
HORTON WILLIAM GRAY
分类号
G09F15/00
主分类号
G09F15/00
代理机构
代理人
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