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发明名称
Hydraulically-actuated well packer
摘要
申请公布号
US3035639(A)
申请公布日期
1962.05.22
申请号
US19570661816
申请日期
1957.05.27
申请人
BROWN
发明人
BROWN CICERO C.;COCHRAN CHUDLEIGH B.
分类号
E21B33/127
主分类号
E21B33/127
代理机构
代理人
主权项
地址
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