Electrical heating of oil wells
United States Patent 2512226
US Patent References:
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Inventors:
Alton, Edwards John
Publication Date:
06/20/1950
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Assignee:
Alton, Edwards John
Primary Class:
Other Classes:
166/67, 392/304, 166/227, 166/61, 166/65.100
International Classes:
E21B36/04; E21B36/00
US Patent References: