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经营范围
发明名称
conjunto de acoplamento para uma cadeia de broca rotativa.
摘要
申请公布号
BR0113007(B1)
申请公布日期
2009.05.05
申请号
BR20010013007
申请日期
2001.07.23
申请人
发明人
TODD ANDREW HAINES
分类号
E21B17/042;F16L15/06
主分类号
E21B17/042
代理机构
代理人
主权项
地址
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