Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6308594 | Ratchet wrench structure | — | 2001-10-30 |
| 5676254 | Structure of tool box | Yu-Tsang Lee | 1997-10-14 |
| 5264258 | Fire-proof buri filament material and process for making the same | — | 1993-11-23 |
| 4818548 | Method of treating fresh meat cuts | — | 1989-04-04 |
| 4683139 | Process for prepacking fresh meat | — | 1987-07-28 |