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发明名称
Apparatus for freeing an object underground, and the application of such apparatus
摘要
申请公布号
EP1083297(A3)
申请公布日期
2003.03.26
申请号
EP20000203119
申请日期
2000.09.11
申请人
3-D DRILLING BV
发明人
VISSER, TEUNIS
分类号
E21B31/00;E21B31/03;(IPC1-7):E21B31/03
主分类号
E21B31/00
代理机构
代理人
主权项
地址
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