Hopper door for railway cars,申请号US19290397591-传众专利搜索

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发明名称	Hopper door for railway cars
摘要
申请公布号	US1859296(A)	申请公布日期	1932.05.24
申请号	US19290397591	申请日期	1929.10.05
申请人	UNION METAL PRODUCTS COMPANY	发明人	GILPIN GARTH G.
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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