Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11331775 | Switch structure of electric screwdriver | — | 2022-05-17 |
| 11110572 | Connecting shaft structure of electric screwdriver | — | 2021-09-07 |
| 4878404 | Electric screwdriver | — | 1989-11-07 |
| 4653359 | Structural improvement of electric screwdriver with respect to the torsion adjustment thereof | — | 1987-03-31 |