Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5896223 | Optical system having an unlimited depth of focus | FRANK S. LETCHER | 1999-04-20 |
| 5609316 | Suspension system for surgical microscope | — | 1997-03-11 |
| 5288043 | Balanced suspension system for surgical microscope | — | 1994-02-22 |