Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6237447 | One-way driving control mechanism of a wrench | Chyn-Huei Chen | 2001-05-29 |
| 5960680 | Ratchet wrench | Chyn-Huei Chen | 1999-10-05 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6237447 | One-way driving control mechanism of a wrench | Chyn-Huei Chen | 2001-05-29 |
| 5960680 | Ratchet wrench | Chyn-Huei Chen | 1999-10-05 |