Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5674665 | Low contrast film | John F. Sawyer, John C. Brewer, John Tyler Keech, Elizabeth L. Kelly | 1997-10-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5674665 | Low contrast film | John F. Sawyer, John C. Brewer, John Tyler Keech, Elizabeth L. Kelly | 1997-10-07 |