发明名称 DRILLING MACHINE AND METHOD
摘要 The present disclosure provides a machine capable of drilling into the ground at a wide range of angles relative to the ground surface. The present disclosure also provides novel drilling methods.
申请公布号 US2014144707(A1) 申请公布日期 2014.05.29
申请号 US201414168236 申请日期 2014.01.30
申请人 VERMEER MANUFACTURING COMPANY 发明人 HARTKE LOUIS C.;HACKMAN DAVID J.;GUSTAFSON DANIEL L.;BARTELS CHAD A.;MILLER ORIN L.;PHILBROOK JOHN W.
分类号 E21B7/00 主分类号 E21B7/00
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