Railway traffic controlling apparatus,申请号US19410412126-传众专利搜索

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发明名称	Railway traffic controlling apparatus
摘要
申请公布号	US2294496(A)	申请公布日期	1942.09.01
申请号	US19410412126	申请日期	1941.09.24
申请人	THE UNION SWITCH & SIGNAL COMPANY	发明人	YOUNG HENRY S.
分类号	B61L5/04	主分类号	B61L5/04
代理机构		代理人
主权项
地址

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