Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6744736 | Local area network system including shared equipment | — | 2004-06-01 |
| 6744901 | Headphone | Naotaka Tsunoda, Tomomi Hamada | 2004-06-01 |
| 6728388 | Headphone | Koji Nageno | 2004-04-27 |