Appareil de circuit de voie codé,申请号FRD1007492-传众专利搜索

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发明名称	Appareil de circuit de voie codé
摘要
申请公布号	FR1007492(A)	申请公布日期	1952.05.06
申请号	FRD1007492	申请日期	1949.12.30
申请人	THE 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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