Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8042610 | Parallel heater system for subsurface formations | Christopher Harris, John Michael Karanikas | 2011-10-25 |
| 7931086 | Heating systems for heating subsurface formations | Harold J. Vinegar | 2011-04-26 |