Issued Patents 2022
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D965406 | Spare blade storage box of utility knife | Yung-Shun Chen | 2022-10-04 |
| 11413773 | Utility knife | Yung-Shun Chen | 2022-08-16 |
| 11345012 | Ratchet wrench | Yung-Shun Chen | 2022-05-31 |