Title:
Method of and apparatus for drilling oil wells
United States Patent 1981525
Inventors:
Price, Bailey E.
Publication Date:
11/20/1934
Export Citation:
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Assignee:
Price, Bailey E.
Primary Class:
166/381
Other Classes:
166/69, 166/102, 166/193, 166/207, 166/212
International Classes:
E21B7/20; E21B43/10; E21B7/20; E21B43/02
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