Track switch box stuffing box,申请号US19380243922-传众专利搜索

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发明名称	Track switch box stuffing box
摘要
申请公布号	US2286860(A)	申请公布日期	1942.06.16
申请号	US19380243922	申请日期	1938.12.05
申请人	RAILROAD ACCESSORIES CORPORATION	发明人	LAVARACK FREDERICK C.
分类号	B61L5/00	主分类号	B61L5/00
代理机构		代理人
主权项
地址

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