Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D566507 | Nut holder set | — | 2008-04-15 |
| 7178429 | Easy-to-assemble ratcheting tool | — | 2007-02-20 |
| 6848345 | Adjustable head for a wrench | — | 2005-02-01 |
| 6539825 | Single direction ratcheting wrench with stuck prevention and ratcheting direction indication | — | 2003-04-01 |
| D445321 | Wrenches | Pi-Yueh Chen | 2001-07-24 |