Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887604 | Apparatus for performing dual energy medical imaging | Robert E. Klinkowstein, Richard Petrasso | 1989-12-19 |
| 4812775 | Electrostatic ion accelerator | Robert E. Klinkowstein | 1989-03-14 |