Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6832154 | Navigation system | Kouichi Nagaki | 2004-12-14 |
| 6748321 | Navigation system equipped with portable sub-navigation unit | Tsuyoshi Sato, Tamami Oda, Yukitaka Saito | 2004-06-08 |