Centralized traffic controlling system for railroads,申请号US19360093846-传众专利搜索

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发明名称	Centralized traffic controlling system for railroads
摘要
申请公布号	US2141551(A)	申请公布日期	1938.12.27
申请号	US19360093846	申请日期	1936.08.01
申请人	GENERAL RAILWAY SIGNAL COMPANY	发明人	PHINNEY ROBERT M.;HOPPE WALTER H.
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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