Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5041867 | Transport device for microfilm passage camera | Wolfram Betzold, Peter Griessner | 1991-08-20 |
| 4998136 | Continuous microfilming apparatus | Wolfram Betzold, Peter Griessner, Hans-Georg Schepers | 1991-03-05 |
| 4371242 | Objective lens exchanging arrangement in a microfilm reader | Josef Gruber, Walter Rauffer, Peter Nassl | 1983-02-01 |