Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865703 | Particulate magnetic recording media and method of manufacture thereof | — | 1989-09-12 |
| 4855028 | Particulate magnetic recording media having an areally controlled recording characteristic | Matthew R. Bye | 1989-08-08 |
| 4805065 | Particulate magnetic recording media having an areally controlled recording characteristics | Matthew R. Bye | 1989-02-14 |