Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883747 | Color photothermographic elements | Stephen S. Poon, Tran V. Thien, Kumars Sakizadeh, David C. Weigel | 1989-11-28 |
DG
Duncan M. A. Grieve
Overall (1989): #118,679 of 140,708Top 85%
1
Patents 1989