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Title:
Method for cleaning and treating oil and gas wells
United States Patent 1439560
Inventors:
Lee, Robert E.
Publication Date:
12/19/1922
View Patent Images:
Download PDF 1439560
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Assignee:
Lee, Robert E.
Primary Class:
166/303
Other Classes:
166/74, 166/187
International Classes:
E21B43/24
;
E21B43/16