Title:
Electrical borehole heater
United States Patent 3131763
US Patent References:
/1140982.html
- - 1140982

Resistance device
- - 1841332

Subsurface igniter
- - 2771140

Well heater
- - 2792895

Well heater
- - 2836248


Inventors:
Kunetka, Robert E.
Bednarski, Valery N.
Towell, Billy H.
Woodward, Charles D.
Publication Date:
05/05/1964
View Patent Images:
Download PDF 3131763 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
TEXACO INC
Primary Class:
166/60
Other Classes:
166/64
International Classes:
E21B36/04; E21B36/00
Foreign References:
GB316463A
GB331436A