Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5704232 | Lock positioning device for a bicycle | — | 1998-01-06 |
| 5535609 | Lock housing with a key way blocking means | — | 1996-07-16 |
| 5083003 | Adaptive stepper | Charles A. Clark, Jr., Hyon O. Wu | 1992-01-21 |
| 4987753 | Padlock | — | 1991-01-29 |
| 4858455 | Lock core | — | 1989-08-22 |
| 4819464 | Wirelock protector | — | 1989-04-11 |