Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11090657 | Automatic paper shredder | Chung Shih Tsai, Er Ren Zhong | 2021-08-17 |
| 11052402 | Automatic paper shredder with staple removing structure and staple removing method using same | Chung Shih Tsai, Er Ren Zhong | 2021-07-06 |