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发明名称
Drilling method
摘要
申请公布号
AU759454(B2)
申请公布日期
2003.04.17
申请号
AU19990062207
申请日期
1999.10.14
申请人
COUPLER DEVELOPMENTS LIMITED
发明人
LAURENCE JOHN AYLING
分类号
E21B3/02;E21B19/16;E21B21/00;E21B21/01;E21B33/068;(IPC1-7):E21B19/16
主分类号
E21B3/02
代理机构
代理人
主权项
地址
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