Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5650258 | Image formation | Stephen Bernard Doyle, Allen P. Gates, John Michael Kitteridge | 1997-07-22 |
| 5609987 | Improvements in or relating to printing plates | John Michael Kitteridge, Andrew E. Matthews | 1997-03-11 |