Title:
Electric heater for subsurface materials
United States Patent 2484063
US Patent References:
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- - 0972308

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- - 1095365

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- - 1169262

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- - 1232736

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- - 1235770


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