Title:
Electric heater for subsurface materials
United States Patent 2484063
Inventors:
Ackley, Charles S.
Publication Date:
10/11/1949
Export Citation:
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Assignee:
THERMACTOR CORP
Primary Class:
392/304
Other Classes:
166/60, 392/305, 392/480
International Classes:
E21B36/04; E21B36/00
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US Patent References:
2241253Method of treating oil wells
2235695Method of rendering earth materials solid
2134610Oil-bearing sand heater
1973541Deep oil well pump
1763219Method and apparatus for sealing crevices in rock formations or the like
1761227Oil-well heater
1354757Apparatus for treating oil-wells
1291302N/A
1235770N/A
1232736N/A
1169262N/A
1095365N/A
0972308N/A