Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4363536 | Instrument base for optical devices | Willi Hagner, Horst Frimmel, Horst Riegel | 1982-12-14 |
| 4353618 | Optical arrangement for the reflecting microscopic examination of an object | Willi Hagner, Francis Bigar | 1982-10-12 |