Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7082860 | Tang and ratchet wrench with rotating disc operated direction change of drive and ratcheting | Li Wan-Chuan | 2006-08-01 |
| 7004052 | Ratchet wrench with rotating disc | Li Wan-Chuan | 2006-02-28 |
| 6935213 | Mechanism for changing direction of exerted force of wrench having a ratchet wheel | Li Wan-Chuan | 2005-08-30 |
| 6862955 | Wrench having a ratchet wheel | Li Wan-Chuan | 2005-03-08 |