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发明名称
Means for orienting tools in well bores
摘要
申请公布号
US2728554(A)
申请公布日期
1955.12.27
申请号
US19520302592
申请日期
1952.08.04
申请人
EASTMAN OIL WELL SURVEY COMPANY
发明人
GOBLE RALPH W.
分类号
E21B7/08;E21B47/024
主分类号
E21B7/08
代理机构
代理人
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地址
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