RAILWAY TRACK CIRCUIT APPARATUS,申请号CAD365484-传众专利搜索

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发明名称	RAILWAY TRACK CIRCUIT APPARATUS
摘要
申请公布号	CA365484(A)	申请公布日期	1937.04.20
申请号	CAD365484	申请日期
申请人	THE UNION SWITCH AND SIGNAL COMPANY	发明人	PAUL N. MARTIN
分类号		主分类号
代理机构		代理人
主权项
地址

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