Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847383 | Photographic reagent tetrazoles | James R. Bartels-Keith, Roger A. Boggs, Nancy M. Sofen | 1989-07-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847383 | Photographic reagent tetrazoles | James R. Bartels-Keith, Roger A. Boggs, Nancy M. Sofen | 1989-07-11 |