Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10113391 | Retrievable back pressure valve and method of using same | Weldon Kennedy, Leslie Howell | 2018-10-30 |
| 9863213 | Retrievable back pressure valve and method of using same | Weldon Kennedy, Leslie Howell | 2018-01-09 |