Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4862198 | Electrostatic cleaning of electrodes in an electrographic printer | Robert S. Rizza, Ben W. Fagen, Peter Feher, Norman L. Milliard, Thomas B. Kegelman | 1989-08-29 |
| 4839673 | AC corona enhancement for electrostatic imaging devices | Thomas D. Kegelman | 1989-06-13 |