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发明名称
Valve system for sequential flow from multizone producing wells
摘要
申请公布号
US3195644(A)
申请公布日期
1965.07.20
申请号
US19620200128
申请日期
1962.06.05
申请人
HARVEST QUEEN MILL & ELEVATOR COMPANY
发明人
MCCOY JAMES ROY
分类号
E21B34/06;E21B43/14
主分类号
E21B34/06
代理机构
代理人
主权项
地址
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