Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4373173 | Multi-element head assembly | Ralph D. Silkensen | 1983-02-08 |
| 4188649 | Magnetic head having a jagged-edged gap, and method for producing such head | Samuel D. Cheatham, Edmond W. Smathers | 1980-02-12 |