RAILWAY SIGNAL CONTROL SYSTEM,申请号CAD490500-传众专利搜索

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发明名称	RAILWAY SIGNAL CONTROL SYSTEM
摘要
申请公布号	CA490500(A)	申请公布日期	1953.02.10
申请号	CAD490500	申请日期
申请人	THE UNION SWITCH AND SIGNAL COMPANY	发明人	WILLIAM H. CLAUS
分类号		主分类号
代理机构		代理人
主权项
地址

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