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发明名称
Apparatus for actuating sleeve valves and the like in wells
摘要
申请公布号
US3147809(A)
申请公布日期
1964.09.08
申请号
US19620224150
申请日期
1962.09.17
申请人
JOHN R. HATCH;DAVID CRAVEN;REPUBLIC NATIONAL BANK OF DALLAS
发明人
THOMAS GEORGE A.
分类号
E21B34/14
主分类号
E21B34/14
代理机构
代理人
主权项
地址
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