Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5727992 | Method and apparatus for sharpening the surface of a grindstone for a pulp grinder | Juhani Valli | 1998-03-17 |
| 4688725 | Method for regulation of grinding process in a pocket grinder | Heikki Liimatainen, Kaj Sundstrom, Risto T. Vahteri | 1987-08-25 |
| 4538986 | Means for supporting the material under treatment in continuous-action heat treatment furnaces | Markku T. Saarela, Martti E. Huhtala, Raimo A. Niska, Hannu A. Vaittinen | 1985-09-03 |