发明名称 APPARATUS FOR EXCAVATING TRENCHES
摘要 An apparatus for excavating a trench comprises two blades which are spaced apart laterally and arranged to form two slits in the ground, and two laterally spaced excavating discs arranged one behind each blade to run substantially in the cut of the preceding blade and operable to grip spoil between the cuts and remove the spoil to form the trench.
申请公布号 DE2962199(D1) 申请公布日期 1982.03.25
申请号 DE19792962199 申请日期 1979.08.08
申请人 DAVISON, GEOFFREY WILFRED 发明人 DAVISON, GEOFFREY WILFRED
分类号 E02F3/18;E02F3/20;E02F5/02;E02F7/00;(IPC1-7):E02F5/02 主分类号 E02F3/18
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