Title:
Well heater
United States Patent 2792895
Inventors:
Carpenter, Clayton A.
Publication Date:
05/21/1957
Export Citation:
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Assignee:
UNION OIL CO
Primary Class:
166/61
Other Classes:
392/301, 392/480
International Classes:
E21B36/04; E21B36/00
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US Patent References:
2647196Apparatus for heating oil wells
2632836Oil well heater
2076669Electrically operated steamer
1842972Electrical furnace resistor
1457690N/A