Train control system for railroads,申请号US19320645013-传众专利搜索

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发明名称	Train control system for railroads
摘要
申请公布号	US2135514(A)	申请公布日期	1938.11.08
申请号	US19320645013	申请日期	1932.11.30
申请人	GENERAL RAILWAY SIGNAL COMPANY	发明人	HOWE WINTHROP K.
分类号	B61L1/18	主分类号	B61L1/18
代理机构		代理人
主权项
地址

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