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经营范围
发明名称
Rotating stuffing box with split standpipe
摘要
申请公布号
GB2417744(B)
申请公布日期
2009.10.28
申请号
GB20050018029
申请日期
2005.09.05
申请人
WEATHERFORD/LAMB INC.
发明人
CRAIG MELVIN HALL;DEREK TEBAY
分类号
E21B33/08;E21B43/12
主分类号
E21B33/08
代理机构
代理人
主权项
地址
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