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经营范围
发明名称
Improvements in or relating to rock drilling equipment
摘要
申请公布号
AU2005230558(B2)
申请公布日期
2009.12.03
申请号
AU20050230558
申请日期
2005.04.05
申请人
HALCO DRILLING INTERNATIONAL LIMITED
发明人
CHRISTOPHER JAMES GREEN
分类号
E21B4/14;E21B21/12
主分类号
E21B4/14
代理机构
代理人
主权项
地址
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