Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4840860 | Multiactive electrophotographic element | David S. Weiss, Joseph A. Pavlisko | 1989-06-20 |
| 4840861 | Multiactive electrophotographic element | David S. Weiss, Joseph A. Pavlisko | 1989-06-20 |