Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D302798 | Shipping center kiosk | — | 1989-08-15 |
| 4668380 | Method for treating shale | John D. McCollum | 1987-05-26 |
| 4596651 | Two-stage tar sands extraction process | James Patterson | 1986-06-24 |
| 4584088 | Method for treating shale | John D. McCollum | 1986-04-22 |
| 4548701 | Method for extraction solvent recovery | — | 1985-10-22 |