Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11260505 | Ratcheting driver | — | 2022-03-01 |
| 9724817 | Two-position driver | — | 2017-08-08 |
| 9370869 | Retractable utility knife | Wang Zhengguo | 2016-06-21 |
| 9174347 | Retractable utility knife | Wang Zhengguo | 2015-11-03 |