Railway signaling apparatus,申请号US19310569458-传众专利搜索

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发明名称	Railway signaling apparatus
摘要
申请公布号	US1896370(A)	申请公布日期	1933.02.07
申请号	US19310569458	申请日期	1931.10.17
申请人	THE UNION SWITCH & SIGNAL COMPANY	发明人	PETER LESLIE HURST
分类号	B61L5/18	主分类号	B61L5/18
代理机构		代理人
主权项
地址

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