Issued Patents 2011
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8042367 | Tumbler-type key verification system | Yoshiyuki Seki | 2011-10-25 |
| 7963133 | Cylinder lock and unlocking device comprising thereof | — | 2011-06-21 |
| 7954347 | Mechanical key code verification system | Toshiharu Katagiri | 2011-06-07 |
| 7956741 | Tumbler type lock apparatus | Toshiharu Katagiri | 2011-06-07 |
| 7930916 | Locking device and key | Toshiharu Katagiri | 2011-04-26 |
| 7930917 | Lock device | Toshiharu Katagiri | 2011-04-26 |