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发明名称
Indicateur avec un oeil pour chaque direction produisant successivement différentes couleurs lumineuses et les faisant apparaître une à la fois dans cet oeil
摘要
申请公布号
FR834998(A)
申请公布日期
1938.12.08
申请号
FRD834998
申请日期
1938.03.09
申请人
DUFRESNE & DELOGE
发明人
ALLEMAND JOSEPH
分类号
G08G1/095
主分类号
G08G1/095
代理机构
代理人
主权项
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