Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9869165 | Plunger lift arrangement | Kevin W. Hightower, David A. Green, Robert E. Bender | 2018-01-16 |
| 9121269 | Vortex plunger arrangement | David A. Green, Robert E. Bender | 2015-09-01 |