Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818663 | Photographic materials and color proofing system | Stephen R. Powers | 1989-04-04 |
TH
Thomas D. G. Hellings
Overall (1989): #50,634 of 140,708Top 40%
1
Patents 1989