Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11220883 | Retrievable back pressure valve and method of using same | Belo Kellam, Weldon Kennedy | 2022-01-11 |
| 10626701 | Retrievable back pressure valve and method of using same | Belo Kellam, Weldon Kennedy | 2020-04-21 |
| 10113391 | Retrievable back pressure valve and method of using same | Belo Kellam, Weldon Kennedy | 2018-10-30 |
| 9863213 | Retrievable back pressure valve and method of using same | Belo Kellam, Weldon Kennedy | 2018-01-09 |