Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5991689 | Navigation system with switching between an ordinary road preferential mode and a tall road preferential mode | Masahiro Suetsugu, Toyoji Hiyokawa, Kazuteru Maekawa, Takeshi Yanagikubo | 1999-11-23 |