Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5082530 | Method and device in headbox of paper, board or pulp drying machine | Juha Keskiivari, Timo Rosendal, Teuvo Virkkunen, Veijo Virtamo | 1992-01-21 |
| 4923569 | Hydraulic headbox with air attenuation chamber located under the stock flow route | Tapani Nyman, Kai Wikman | 1990-05-08 |