Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5122648 | Apparatus and method for automatically focusing an interference microscope | Donald K. Cohen, James D. Ayres | 1992-06-16 |
| 4931630 | Apparatus and method for automatically focusing an interference microscope | Donald K. Cohen, James D. Ayres | 1990-06-05 |