Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10961784 | Rotating cutter single cone bit | Lian Chen, Yingxin YANG, Zongliang Xie, Haitao Ren | 2021-03-30 |
| 10352101 | Composite drill bit | — | 2019-07-16 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10961784 | Rotating cutter single cone bit | Lian Chen, Yingxin YANG, Zongliang Xie, Haitao Ren | 2021-03-30 |
| 10352101 | Composite drill bit | — | 2019-07-16 |