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发明名称
RETRIEVABLE WELL PACKER
摘要
申请公布号
GB2130621(A)
申请公布日期
1984.06.06
申请号
GB19830012505
申请日期
1983.05.06
申请人
* HUGHES TOOL COMPANY
发明人
ROBERT W * EVANS;JAMES W * MONTGOMERY
分类号
E21B33/1295;(IPC1-7):E21B33/12
主分类号
E21B33/1295
代理机构
代理人
主权项
地址
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