Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5768925 | Electronic-component-integrated key | Yoshio Watanuki | 1998-06-23 |
| 5043593 | Optical theft deterrent system | Shunsaku Tsutsumi | 1991-08-27 |
| 4702117 | Lock actuator for a pair of locks | Sunsaku Tsutsumi | 1987-10-27 |