Title:
Well heater
United States Patent 2666487
Inventors:
Bowman, Hyman D.
Publication Date:
01/19/1954
Export Citation:
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Assignee:
Bowman, Hyman D.
Primary Class:
166/60
Other Classes:
166/66.4, 166/177.7, 392/301
International Classes:
E21B36/04; E21B36/00
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US Patent References:
2506853Oil well furnace
2500513Well heater
1820291Oil extracting device
1291302N/A
0573142N/A