Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4592649 | Photographic roller copying apparatus | Friedrich Hujer, Erich Nagel, Bernd Payrhammer, Wolfgang Zahn | 1986-06-03 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4592649 | Photographic roller copying apparatus | Friedrich Hujer, Erich Nagel, Bernd Payrhammer, Wolfgang Zahn | 1986-06-03 |