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发明名称
Borehole inclination indicating device
摘要
申请公布号
US2596759(A)
申请公布日期
1952.05.13
申请号
US19460715395
申请日期
1946.12.11
申请人
H. JOHN EASTMAN
发明人
BROWN GUY E.
分类号
E21B47/022
主分类号
E21B47/022
代理机构
代理人
主权项
地址
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