Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8016049 | Method and apparatus for installing a borehole heat exchanger in the earth | Dieter Wurm | 2011-09-13 |
| 7963723 | Overdrilling apparatus | Dieter Wurm, Udo Harer | 2011-06-21 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8016049 | Method and apparatus for installing a borehole heat exchanger in the earth | Dieter Wurm | 2011-09-13 |
| 7963723 | Overdrilling apparatus | Dieter Wurm, Udo Harer | 2011-06-21 |