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发明名称
THRU-TUBING BRIDGE PLUG
摘要
申请公布号
US3460624(A)
申请公布日期
1969.08.12
申请号
USD3460624
申请日期
1967.04.14
申请人
SCHLUMBERGER TECHNOLOGY CORP.
发明人
JOHN AITKEN;JEAN-LOUIS DROULERS
分类号
E21B23/06;E21B33/127;E21B33/134;(IPC1-7):E21B33/13;E21B23/00
主分类号
E21B23/06
代理机构
代理人
主权项
地址
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