Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888319 | Silica-alumina extrudates | Tom Huizinga | 1989-12-19 |
JD
Jacobus T. Daamen
Overall (1989): #101,093 of 140,708Top 75%
1
Patents 1989