Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4564276 | Microfilm sensing device with a projection lamp and cold-light mirror | Wilfried Hofmann, Walter Rauffer, Eberhard Zieran, Jurgen Sylla | 1986-01-14 |
| 4244641 | Microfilm reader | Wilfried Hofmann, Guenther Lueder, Peter Nassl, Peter Puechler, John Krueger +1 more | 1981-01-13 |
| 4235536 | Microfilm reader | Wilfried Hofmann, Walter Rauffer | 1980-11-25 |