Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869993 | Optical brightener containing positive working color proofing system | Wahib Farahat, Dennis J. Bellville | 1989-09-26 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869993 | Optical brightener containing positive working color proofing system | Wahib Farahat, Dennis J. Bellville | 1989-09-26 |