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Method for cleaning oil wells
United States Patent 2300348
Inventors:
Dana, Frank E.
Publication Date:
10/27/1942
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Download PDF 2300348
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Assignee:
Dana, Frank E.
Primary Class:
166/302
Other Classes:
166/304, 166/112, 166/62
International Classes:
C09K8/524
;
C09K8/52