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发明名称
Bit changer
摘要
申请公布号
AU2007314668(B2)
申请公布日期
2013.02.28
申请号
AU20070314668
申请日期
2007.10.04
申请人
ATLAS COPCO ROCK DRILLS AB
发明人
ANDREN, MATS;JONSSON, HANS
分类号
E21B19/18;E21B19/20
主分类号
E21B19/18
代理机构
代理人
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