Railway switch operating apparatus,申请号US19370176836-传众专利搜索

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发明名称	Railway switch operating apparatus
摘要
申请公布号	US2175593(A)	申请公布日期	1939.10.10
申请号	US19370176836	申请日期	1937.11.27
申请人	THE UNION SWITCH & SIGNAL COMPANY	发明人	BONE HERBERT L.
分类号	B61L5/02	主分类号	B61L5/02
代理机构		代理人
主权项
地址

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