RAILWAY TRAFFIC CONTROLLING SYSTEM,申请号CAD338691-传众专利搜索

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发明名称	RAILWAY TRAFFIC CONTROLLING SYSTEM
摘要
申请公布号	CA338691(A)	申请公布日期	1934.01.16
申请号	CAD338691	申请日期
申请人	THE GENERAL RAILWAY SIGNAL COMPANY	发明人	JOSEPH E. WILLING
分类号		主分类号
代理机构		代理人
主权项
地址

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