Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4689254 | Magnetic recording element having a lubricative and protective coating | John Arndt | 1987-08-25 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4689254 | Magnetic recording element having a lubricative and protective coating | John Arndt | 1987-08-25 |