Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6679324 | Downhole device for controlling fluid flow in a well | Johannis Josephus Den Boer, Astrid Hartwijk, John Foreman Stewart | 2004-01-20 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6679324 | Downhole device for controlling fluid flow in a well | Johannis Josephus Den Boer, Astrid Hartwijk, John Foreman Stewart | 2004-01-20 |