Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5253496 | Simple bicycle lock structure | — | 1993-10-19 |
| 5005384 | Mechanism for a combination padlock | Tzung-I Lo | 1991-04-09 |
| 4986095 | Retractable lock structure | Chao-Jen Chou | 1991-01-22 |