Recirculating liquid fertilizer apparatus with spiral agitation blade,申请号US19660549731-传众专利搜索

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发明名称	Recirculating liquid fertilizer apparatus with spiral agitation blade
摘要
申请公布号	US3310237(A)	申请公布日期	1967.03.21
申请号	US19660549731	申请日期	1966.05.12
申请人	W. R. GRACE & CO.	发明人	WELCH ROBERT L.
分类号	A01C23/00	主分类号	A01C23/00
代理机构		代理人
主权项
地址

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