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发明名称
Bit assembly for a down-the-hole hammer drill
摘要
申请公布号
AU2010280347(A1)
申请公布日期
2012.03.22
申请号
AU20100280347
申请日期
2010.08.05
申请人
GIEN, BERNARD
发明人
GIEN, BERNARD LIONEL
分类号
E21B4/14
主分类号
E21B4/14
代理机构
代理人
主权项
地址
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