Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5701343 | Method and system for digital information protection | Youichi Takashima, Shinji Ishii | 1997-12-23 |
| 5617319 | Navigation apparatus with enhanced positional display function | Takeharu Arakawa, Morio Araki, Kenichi Nobe | 1997-04-01 |