Title:
Method of and apparatus for drilling oil wells
United States Patent 1981525


Inventors:
Price, Bailey E.
Application Number:
US70097033A
Publication Date:
11/20/1934
Filing Date:
12/05/1933
Assignee:
Price, Bailey E.
Primary Class:
Other Classes:
166/69, 166/102, 166/193, 166/207, 166/212
International Classes:
E21B7/20; E21B43/10
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