发明名称 Earth working attachment for tractors
摘要 An earth working attachment which can be easily manufactured, assembled and installed on a tractor of any size but is primarily suitable for garden type tractors as have low horsepower and includes tractor mounting brackets, a main beam supporting the earth working tools, and a lifting means for raising and lowering the tools in a plane exteriorly of the rear wheels of the tractor.
申请公布号 US4260028(A) 申请公布日期 1981.04.07
申请号 US19780961625 申请日期 1978.11.17
申请人 COOPER, JOSEPH C. 发明人 COOPER, JOSEPH C.
分类号 A01B59/046;(IPC1-7):A01B63/04 主分类号 A01B59/046
代理机构 代理人
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