Indicating means for switch machines,申请号US19300492282-传众专利搜索

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发明名称	Indicating means for switch machines
摘要
申请公布号	US2003944(A)	申请公布日期	1935.06.04
申请号	US19300492282	申请日期	1930.10.30
申请人	GENERAL RAILWAY SIGNAL COMPANY	发明人	LANGDON ANDREW
分类号	B61L5/06	主分类号	B61L5/06
代理机构		代理人
主权项
地址

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