Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9903361 | Derrick-type long-stroke hydraulic pumping unit | — | 2018-02-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9903361 | Derrick-type long-stroke hydraulic pumping unit | — | 2018-02-27 |