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发明名称
Overpull indicator
摘要
申请公布号
GB2485039(A)
申请公布日期
2012.05.02
申请号
GB20110018044
申请日期
2011.10.19
申请人
VETCO GRAY, INC
发明人
SIBU VARGHESE;RYAN HERBEL;DIEN NGUYEN;JAVIER GARCIA
分类号
E21B33/04;E21B17/10;E21B33/043
主分类号
E21B33/04
代理机构
代理人
主权项
地址
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