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发明名称
Blowout preventer
摘要
申请公布号
US3416767(A)
申请公布日期
1968.12.17
申请号
US19660603200
申请日期
1966.12.20
申请人
SCHLUMBERGER TECHNOLOGY CORPORATION
发明人
BLAGG LEOU
分类号
E21B33/06;E21B33/072
主分类号
E21B33/06
代理机构
代理人
主权项
地址
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