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发明名称
Appareil de publicité par réflexion de textes lumineux mobiles lisibles des deux côtés de l'appareil
摘要
申请公布号
FR1049217(A)
申请公布日期
1953.12.29
申请号
FRD1049217
申请日期
1952.01.17
申请人
发明人
GRUNBERG ROBERT
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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