发明名称 Trench digging, cable laying and trench filling apparatus
摘要 A trench digging apparatus which is provided with a safety shield shaped to direct dug dirt back into the trench. The trench digger is also provided with a cable laying device which lays the cable in the dug trench ahead of the refilling dirt. A pipe pulling attachment may also be provided for laying a pipe while digging and refilling the trench.
申请公布号 US4914840(A) 申请公布日期 1990.04.10
申请号 US19890344921 申请日期 1989.04.28
申请人 PORTER, ROGER D. 发明人 PORTER, ROGER D.
分类号 E02F5/10;E02F5/12 主分类号 E02F5/10
代理机构 代理人
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