Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861438 | Method of making patterns | Edward Irving | 1989-08-29 |
| 4857437 | Process for the formation of an image | Christopher G. Demmer, Edward Irving | 1989-08-15 |
| 4849320 | Method of forming images | Edward Irving | 1989-07-18 |