Rotary circular harrow,申请号US19490124046-传众专利搜索

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发明名称	Rotary circular harrow
摘要
申请公布号	US2560909(A)	申请公布日期	1951.07.17
申请号	US19490124046	申请日期	1949.10.28
申请人	ERNEST S. THOMPSON;ETHEL THOMPSON	发明人	THOMPSON ERNEST S.
分类号	A01B21/06	主分类号	A01B21/06
代理机构		代理人
主权项
地址

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