Electric lift and depth control device for farm implements,申请号US19400337921-传众专利搜索

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发明名称	Electric lift and depth control device for farm implements
摘要
申请公布号	US2240879(A)	申请公布日期	1941.05.06
申请号	US19400337921	申请日期	1940.05.29
申请人	ARNST JOHN H	发明人	ARNST JOHN H.
分类号	A01B63/12	主分类号	A01B63/12
代理机构		代理人
主权项
地址

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