Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6490955 | Screwdriver shank with a universal joint | Chiu-Man Chang-Kao | 2002-12-10 |
| D465976 | Wrench | — | 2002-11-26 |
| 6446341 | Tool holder and tools combination | Chiu-Man Chang-Kao | 2002-09-10 |