Issued Patents 2017
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9605486 | Rolling cutter with close loop retaining ring | Yuri Burhan, Jibin Shi, Youhe Zhang | 2017-03-28 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9605486 | Rolling cutter with close loop retaining ring | Yuri Burhan, Jibin Shi, Youhe Zhang | 2017-03-28 |