Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7213649 | Geothermal pipe weight | Richard C. Burhans | 2007-05-08 |
| 7048037 | Geothermal heating and/or cooling apparatus and method of using same | — | 2006-05-23 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7213649 | Geothermal pipe weight | Richard C. Burhans | 2007-05-08 |
| 7048037 | Geothermal heating and/or cooling apparatus and method of using same | — | 2006-05-23 |