Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859316 | Process and apparatus for withdrawing solids from a vessel | — | 1989-08-22 |
HP
Hugo Gerardus Polderman
Overall (1989): #102,855 of 140,708Top 75%
1
Patents 1989