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发明名称
Drilling apparatus
摘要
申请公布号
AU763940(B2)
申请公布日期
2003.08.07
申请号
AU20000076339
申请日期
2000.09.22
申请人
AZUKO PTY LTD
发明人
JOHN ELSBY
分类号
E21B4/14;E21B10/38;E21B10/60;E21B12/04;E21B21/12;(IPC1-7):E21B4/14
主分类号
E21B4/14
代理机构
代理人
主权项
地址
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