Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6766459 | Time keeping apparatus and method for controlling the same | Noriaki Shimura | 2004-07-20 |
| 6724692 | Time measurement device and method | Kenichi Okuhara, Akihiko Maruyama, Nobuhiro Koike | 2004-04-20 |