Issued Patents 2022
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11360583 | Electromagnetic fountain pen | Yuanzhi Li | 2022-06-14 |
| 11287906 | Passive electromagnetic fountain pen | Yuanzhi Li | 2022-03-29 |
| 11256344 | Passive electromagnelic pen | Yuanzhi Li | 2022-02-22 |