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经营范围
发明名称
Hydraulic packers
摘要
申请公布号
US2715444(A)
申请公布日期
1955.08.16
申请号
US19500150313
申请日期
1950.03.17
申请人
HALLIBURTON OIL WELL CEMENTING COMPANY
发明人
FEWEL KENNETH J.
分类号
E21B33/124
主分类号
E21B33/124
代理机构
代理人
主权项
地址
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