Potato digger with soil pulverizing and sifting screw,申请号US19470733961-传众专利搜索

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发明名称	Potato digger with soil pulverizing and sifting screw
摘要
申请公布号	US2521581(A)	申请公布日期	1950.09.05
申请号	US19470733961	申请日期	1947.03.11
申请人	HOWARD SR HUGH B	发明人	SR. HUGH B. HOWARD,
分类号	A01D19/12	主分类号	A01D19/12
代理机构		代理人
主权项
地址

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