Issued Patents 2002
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6460386 | Electronic key structure | Satoshi Ogata, Tetsuyuki Tsukano | 2002-10-08 |
| 6442985 | Lock apparatus and lock system | Masaki Tamura, Tetsuyuki Tsukano, Shigeo Chiba | 2002-09-03 |
| 6389856 | Lock apparatus | Tetsuyuki Tsukano, Satoshi Ogata | 2002-05-21 |
| 6382003 | Lock apparatus | Tetsuyuki Tsukano, Satashi Ogata | 2002-05-07 |