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发明名称
Reverse acting anchor for well packers and the like
摘要
申请公布号
US3195642(A)
申请公布日期
1965.07.20
申请号
US19640352714
申请日期
1964.03.12
申请人
CONRAD MARTIN B
发明人
CONRAD MARTIN B.
分类号
E21B33/129;E21B33/1295
主分类号
E21B33/129
代理机构
代理人
主权项
地址
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