Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4419698 | Color video signal recording and/or reproducing system | Yoshihiko Oota | 1983-12-06 |
| 4246615 | System for recording and/or reproducing an audio signal which has been converted into a digital signal | Akira Hirota | 1981-01-20 |