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发明名称
Sliding sleeve well tool
摘要
申请公布号
US2949963(A)
申请公布日期
1960.08.23
申请号
US19570636765
申请日期
1957.01.28
申请人
CAMCO, INCORPORATED
发明人
JR. HAROLD E. MCGOWEN,;DAFFIN DOUGLAS E.
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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