Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4919206 | Method for preventing bitumen backflow in injection wells when steam injection is interrupted | D. Carl FREEMAN | 1990-04-24 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4919206 | Method for preventing bitumen backflow in injection wells when steam injection is interrupted | D. Carl FREEMAN | 1990-04-24 |