Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6508174 | Electrostatic printing aid | Ernst August Hahne, Thomas Ludwig | 2003-01-21 |
| 6504700 | Active discharge collector for minimizing positive and/or negative charges on moving material webs | Ernst August Hahne | 2003-01-07 |