Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D640286 | Digital video disk recorder | — | 2011-06-21 |
| D639824 | Digital video disk player with amplifier | Seiji Usami, Akihiko Hotta | 2011-06-14 |
| D633527 | Digital video disk player | Seiji Usami, Hiroshi Yamamizu | 2011-03-01 |