Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868700 | Cleaning device for disc drive unit | Alexander Phillip McDonnell | 1989-09-19 |
| 4851945 | Demagnetizing device having an oscillating permanent magnet | Roxanne Yvonne Fritsch, Francois Malgat | 1989-07-25 |