Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11814944 | Reactive torque automatic balancing device for screw drilling tool, drilling string, and method | Deshuai Zheng, Menggang Li, Chengcheng Niu, Xiangyang Zhao | 2023-11-14 |
| D662129 | Processing cartridge | Yangyun Zeng | 2012-06-19 |