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发明名称
Appareil pour la projection automatique d'annonces lumineuses depuis les wagons jusque sur les parois des tunnels ou sur le sol pour chemins de fer électriques ou autres
摘要
申请公布号
FR713065(A)
申请公布日期
1931.10.21
申请号
FRD713065
申请日期
1931.01.06
申请人
发明人
FUSIER PIERRE
分类号
G09F19/18;G09F21/04
主分类号
G09F19/18
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