Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5686221 | Negative working peel apart color proofing process | — | 1997-11-11 |
| 5660968 | Negative working, peel developeable, single sheet color proofing system with improved background color | Wojciech A. Wilczak | 1997-08-26 |