Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5445328 | Dual zone refiner with separated discharge flow control | — | 1995-08-29 |
| 5383608 | Twin conical refiner with dual ribbon feeders | Karl T. G. Dahiqvist, Franz Haider, Gregory R. Kohler, Josef Krasser, William F. Lahner, III +5 more | 1995-01-24 |