Railway signaling system,申请号US19360102557-传众专利搜索

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发明名称	Railway signaling system
摘要
申请公布号	US2128211(A)	申请公布日期	1938.08.23
申请号	US19360102557	申请日期	1936.09.25
申请人	GENERAL RAILWAY SIGNAL COMPANY	发明人	JUDGE THOMAS J.
分类号	B61L3/22	主分类号	B61L3/22
代理机构		代理人
主权项
地址

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