Train dispatching system for railroads,申请号US19270187508-传众专利搜索

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发明名称	Train dispatching system for railroads
摘要
申请公布号	US1990472(A)	申请公布日期	1935.02.12
申请号	US19270187508	申请日期	1927.04.29
申请人	GENERAL RAILWAY SIGNAL COMPANY	发明人	DODGSON FRANK LAMONT
分类号	B61L7/08	主分类号	B61L7/08
代理机构		代理人
主权项
地址

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