Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864435 | Magnetic record erase circuit | Koji Shimanuki | 1989-09-05 |
| 4827357 | Apparatus for copying modulated video signals from recording medium to recording medium including color and chroma correction | — | 1989-05-02 |