Signal optique améliorant la circulation aux carrefours des villes, des routes et supprimant le danger des dépassements dans les hauts des côtes et dans les virages,申请号FRD1174360-传众专利搜索

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发明名称	Signal optique améliorant la circulation aux carrefours des villes, des routes et supprimant le danger des dépassements dans les hauts des côtes et dans les virages
摘要
申请公布号	FR1174360(A)	申请公布日期	1959.03.10
申请号	FRD1174360	申请日期	1957.04.25
申请人		发明人	DUGUET LUCIEN
分类号	E01F9/07	主分类号	E01F9/07
代理机构		代理人
主权项
地址

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