Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873692 | Pulsed tunable solid state laser | Bertram C. Johnson, John C. DiFonzo | 1989-10-10 |
| 4872181 | Laser resonator with laser medium exhibiting thermally induced birefringence | Bertram C. Johnson | 1989-10-03 |