Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816333 | Silica coating | Harold G. Sowman, Soon-Kun Kang | 1989-03-28 |
RL
Roger W. Lange
Overall (1989): #62,466 of 140,708Top 45%
1
Patents 1989