Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6318464 | Vapor extraction of hydrocarbon deposits | — | 2001-11-20 |
| 5407009 | Process and apparatus for the recovery of hydrocarbons from a hydrocarbon deposit | Roger Butler | 1995-04-18 |