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经营范围
发明名称
Down-the-hole hammer, percussion bit assembly and method of enlarging a hole
摘要
申请公布号
AU2007232500(B2)
申请公布日期
2010.06.03
申请号
AU20070232500
申请日期
2007.02.06
申请人
SANDVIK INTELLECTUAL PROPERTY AB
发明人
ROB A. SIMMONS
分类号
E21B10/40;E21B10/26
主分类号
E21B10/40
代理机构
代理人
主权项
地址
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