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发明名称
Drehbohrmeissel
摘要
申请公布号
DE69531277(D1)
申请公布日期
2003.08.21
申请号
DE19956031277
申请日期
1995.09.29
申请人
CAMCO DRILLING GROUP LTD., STONEHOUSE
发明人
FULLER, JOHN M.;MURDOCK, ANDREW
分类号
E21B10/42;E21B10/43;E21B10/56;E21B10/567;(IPC1-7):E21B10/56
主分类号
E21B10/42
代理机构
代理人
主权项
地址
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