Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5443737 | Rotary drum with radial spray jets | Roland Fjallstrom, Rune H. Frykhult | 1995-08-22 |
| 5119953 | Pulp suspension screening and fractionation apparatus | Roland Fjallstrom | 1992-06-09 |