Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10982491 | Fixed-cutter drill bits with track-set primary cutters and backup cutters | — | 2021-04-20 |
| D912263 | Blackhead remover | Junhui Ou, Deqing Wan | 2021-03-02 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10982491 | Fixed-cutter drill bits with track-set primary cutters and backup cutters | — | 2021-04-20 |
| D912263 | Blackhead remover | Junhui Ou, Deqing Wan | 2021-03-02 |