Système de détection d'intervalle de trains sur une voie ferrée,申请号FRD970623-传众专利搜索

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发明名称	Système de détection d'intervalle de trains sur une voie ferrée
摘要
申请公布号	FR970623(A)	申请公布日期	1951.01.08
申请号	FRD970623	申请日期	1948.08.21
申请人	THE UNION SWITCH & SIGNAL COMPANY	发明人
分类号	B61L13/00	主分类号	B61L13/00
代理机构		代理人
主权项
地址

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