发明名称 Sand fighter with folding frame
摘要 A sand fighter is drawn through an agricultural field by a tractor. The sand fighter has five sections. The outer or distal sections are folded manually. The inner or proximal sections are folded hydraulically. The center or medial section is connected to the power lift of the tractor so the entire sand fighter may be raised and lowered and drafted through the field.
申请公布号 US4612997(A) 申请公布日期 1986.09.23
申请号 US19850751326 申请日期 1985.07.02
申请人 PHARES AND WILKINS MFG. CO. 发明人 WILKINS, WALTER B.
分类号 A01B73/04;(IPC1-7):A01B63/04;A01B63/02 主分类号 A01B73/04
代理机构 代理人
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