Perfectionnements aux dispositifs de signalisation de chemin de fer,申请号FRD951345-传众专利搜索

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发明名称	Perfectionnements aux dispositifs de signalisation de chemin de fer
摘要
申请公布号	FR951345(A)	申请公布日期	1949.10.21
申请号	FRD951345	申请日期	1947.08.06
申请人	UNION SWITCH & SIGNAL COMPANY	发明人
分类号	B61L1/18	主分类号	B61L1/18
代理机构		代理人
主权项
地址

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