Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7339486 | Insertion type fuse with breakage indication | — | 2008-03-04 |
| 6263768 | Ratchet tool operatable at a small angle | Yi-Ming Tung, Shiu-Mei Cheng | 2001-07-24 |
| 6205891 | Ratchet wrench with dual pawl members | Yi-Ming Tung | 2001-03-27 |
| D438774 | Screwdriver bit | Yi-Ming Tung | 2001-03-13 |
| 6176161 | Damaged screw removing screwdriver | Yi-Ming Tung | 2001-01-23 |
| 6145412 | Ratchet tool | Shiu-Mei Cheng, Yi-Ming Tung | 2000-11-14 |
| 5924203 | Retractable knife device | — | 1999-07-20 |