Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889988 | Feedback control for scanning tunnel microscopes | Virgil B. Elings | 1989-12-26 |
| 4871938 | Positioning device for a scanning tunneling microscope | Virgil B. Elings | 1989-10-03 |