Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10263771 | Two-way key switching method and implementation device | Manxia Tie, Qin Li | 2019-04-16 |
| 9705671 | One-way key switching method and implementation device | Qin Li, Manxia Tie | 2017-07-11 |