Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4858002 | Wide-angle objective for endoscopes | — | 1989-08-15 |
| 4815833 | Objective for endoscopes and process for its production | Siegfried Karst, Rolf Zickwolf, Wilfried Uhrich | 1989-03-28 |