Hopper car door frame,申请号US19480044672-传众专利搜索

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发明名称	Hopper car door frame
摘要
申请公布号	US2559760(A)	申请公布日期	1951.07.10
申请号	US19480044672	申请日期	1948.08.17
申请人	ENTERPRISE RAILWAY EQUIPMENT COMPANY	发明人	DOREY GEORGE B.
分类号	B61D7/18	主分类号	B61D7/18
代理机构		代理人
主权项
地址

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