Issued Patents 2017
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9790772 | Plunger lift apparatus | James Allen Jefferies | 2017-10-17 |
| 9689242 | Dart plunger | James Allen Jefferies | 2017-06-27 |
| 9683430 | Gas-lift plunger | — | 2017-06-20 |
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9790772 | Plunger lift apparatus | James Allen Jefferies | 2017-10-17 |
| 9689242 | Dart plunger | James Allen Jefferies | 2017-06-27 |
| 9683430 | Gas-lift plunger | — | 2017-06-20 |