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发明名称
Portable and directional electrocrushing drill
摘要
The present invention relates to a portable, directional electrocrushing drilling apparatus and method.
申请公布号
US7559378(B2)
申请公布日期
2009.07.14
申请号
US20060479346
申请日期
2006.06.29
申请人
TETRA CORPORATION
发明人
MOENY WILLIAM M.
分类号
E21B7/04;E21B7/15
主分类号
E21B7/04
代理机构
代理人
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