Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859578 | Photographic recording material providing improved granularity properties | Drake M. Michno, Norma B. Platt, David A. Steele | 1989-08-22 |
DS
David T. Southby
Overall (1989): #121,636 of 140,708Top 90%
1
Patents 1989