RAILWAY SIGNALLING SYSTEM,申请号CAD396215-传众专利搜索

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发明名称	RAILWAY SIGNALLING SYSTEM
摘要
申请公布号	CA396215(A)	申请公布日期	1941.04.29
申请号	CAD396215	申请日期
申请人	NACHOD AND UNITED STATES SIGNAL COMPANY	发明人	FRANK H. RICHTERKESSING
分类号		主分类号
代理机构		代理人
主权项
地址

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