Train-control system,申请号US19280293771-传众专利搜索

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发明名称	Train-control system
摘要
申请公布号	US1794584(A)	申请公布日期	1931.03.03
申请号	US19280293771	申请日期	1928.07.18
申请人	GENERAL RAILWAY SIGNAL COMPANY	发明人	BUSHNELL CHARLES S.
分类号	B61L3/08	主分类号	B61L3/08
代理机构		代理人
主权项
地址

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