Discharge opening and closure for concrete mixers,申请号US19290380002-传众专利搜索

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发明名称	Discharge opening and closure for concrete mixers
摘要
申请公布号	US1821056(A)	申请公布日期	1931.09.01
申请号	US19290380002	申请日期	1929.07.22
申请人	MORRIS & BOOGHER, INC.	发明人	DURHAM KENNETH P.
分类号	B01F15/00	主分类号	B01F15/00
代理机构		代理人
主权项
地址

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