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发明名称
Subsea wellhead keyless anti-rotation device
摘要
申请公布号
AU2011239293(A1)
申请公布日期
2012.05.17
申请号
AU20110239293
申请日期
2011.10.24
申请人
VETCO GRAY INC.
发明人
YATES, CHAD ERIC
分类号
E21B33/035
主分类号
E21B33/035
代理机构
代理人
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地址
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