Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6929330 | Method and system for mining hydrocarbon-containing materials | Ronald D. Drake, Michael Kobler | 2005-08-16 |
| 6869147 | Method and system for mining hydrocarbon-containing materials | Ronald D. Drake, Michael Kobler | 2005-03-22 |