Door frame for railway hopper cars,申请号US19470761232-传众专利搜索

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法人/股东/高管

发明名称	Door frame for railway hopper cars
摘要
申请公布号	US2506259(A)	申请公布日期	1950.05.02
申请号	US19470761232	申请日期	1947.07.16
申请人	WINE WILLIAM E	发明人	WINE WILLIAM E.
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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