Title:
Oil well heater
United States Patent 2808110
US Patent References:
/0522737.html
- - 0522737

/0806039.html
- - 0806039

Apparatus for treating oil-wells
- - 1354757

Electric heater for oil wells
- - 2302774


Inventors:
Samuel, Spitz
Publication Date:
10/01/1957
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Assignee:
Electronic, Oil Well Heater Com
Primary Class:
166/61
Other Classes:
392/304, 92/5L
International Classes:
E21B36/04; E21B36/00