Railway track switch controlling apparatus,申请号US19330654047-传众专利搜索

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发明名称	Railway track switch controlling apparatus
摘要
申请公布号	US1956605(A)	申请公布日期	1934.05.01
申请号	US19330654047	申请日期	1933.01.28
申请人	THE UNION SWITCH & SIGNAL COMPANY	发明人	WILLARD PAUL F.
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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