Trolley railway signal system,申请号US19280288133-传众专利搜索

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发明名称	Trolley railway signal system
摘要
申请公布号	US1868180(A)	申请公布日期	1932.07.19
申请号	US19280288133	申请日期	1928.06.25
申请人	NACHOD & UNITED STATES SIGNAL CO., INC.	发明人	STOLP SAMUEL S.;RICHTERKESSING FRANK H.
分类号	B61L13/04	主分类号	B61L13/04
代理机构		代理人
主权项
地址

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