Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8776876 | Expandable device for use in a well bore | Barrie Hart, Craig D. Johnson, Peter Besselink | 2014-07-15 |
| 8397804 | Expandable device for use in a well bore | Barrie Hart, Craig D. Johnson, Peter Besselink | 2013-03-19 |