Issued Patents 2024
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12139974 | Petroleum drill-string shock absorbers | Haiping Liu, Qi Lv, Donghang Han, Dongmei Zhu | 2024-11-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12139974 | Petroleum drill-string shock absorbers | Haiping Liu, Qi Lv, Donghang Han, Dongmei Zhu | 2024-11-12 |