Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4809118 | PCM helical-scan magnetic record/playback systems | Shozo Nakagawa, Katsuya Yokoyama | 1989-02-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4809118 | PCM helical-scan magnetic record/playback systems | Shozo Nakagawa, Katsuya Yokoyama | 1989-02-28 |