Heater for oil wells
United States Patent 2754912
US Patent References:
/1082971.html
- - 1082971

/1169262.html
- - 1169262

Electrical heater for oil wells
- - 1504208

Method of and apparatus for treating oil wells
- - 1839632

Well heater
- - 2202034


Inventors:
Curson, Nicholas W.
Publication Date:
07/17/1956
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Assignee:
Curson, Nicholas W.
Primary Class:
166/60
Other Classes:
392/301, 392/480, 166/61
International Classes:
E21B36/04; E21B36/00