ELECTRIC SWITCH LOCKS FOR RAILROADS,申请号CAD481668-传众专利搜索

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发明名称	ELECTRIC SWITCH LOCKS FOR RAILROADS
摘要
申请公布号	CA481668(A)	申请公布日期	1952.03.11
申请号	CAD481668	申请日期
申请人	GENERAL RAILWAY SIGNAL COMPANY	发明人	ANDREW LANGDON
分类号		主分类号
代理机构		代理人
主权项
地址

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