Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4799392 | Method for determining silicon (mass 28) beam purity prior to implantation of gallium arsenide | Robert P. Lorigan, Richard L. Peterson | 1989-01-24 |
| H569 | Charge storage depletion region discharge protection | Charles J. Varker | 1989-01-03 |