Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5041867 | Transport device for microfilm passage camera | Wolfram Betzold, Karl-Heinz Dietrich | 1991-08-20 |
| 4998136 | Continuous microfilming apparatus | Wolfram Betzold, Karl-Heinz Dietrich, Hans-Georg Schepers | 1991-03-05 |