Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881286 | Effective diffuser/thickener screen backflushing | Ole J. Ricter, Finn Jacobsen | 1989-11-21 |
| 4840047 | Multiscreen pressure diffuser | Ole J. Richter | 1989-06-20 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881286 | Effective diffuser/thickener screen backflushing | Ole J. Ricter, Finn Jacobsen | 1989-11-21 |
| 4840047 | Multiscreen pressure diffuser | Ole J. Richter | 1989-06-20 |