Side bearing for railroad cars,申请号US19290404721-传众专利搜索

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发明名称	Side bearing for railroad cars
摘要
申请公布号	US1868393(A)	申请公布日期	1932.07.19
申请号	US19290404721	申请日期	1929.11.04
申请人	MIDDLEHURST GEORGE S	发明人	MIDDLEHURST GEORGE S.
分类号	B61F5/14	主分类号	B61F5/14
代理机构		代理人
主权项
地址

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