Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4832763 | Method of stress-relief annealing a magnetic core containing amorphous material | Richard E. Kothmann | 1989-05-23 |
| 4816119 | Process for production of magnetic media | — | 1989-03-28 |