Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5931017 | Arrangement for cooling supply air in an air-conditioning installation | Seppo Kalevi Kanninen, Ingmar Erik Rolin | 1999-08-03 |
| 5806582 | Method and arrangement for controlling heat transfer in ventilation Apparatus or air conditioning apparatus | Esko Tapio Santavuori, Ingmar Erik Rolin | 1998-09-15 |
| 5632675 | Mixing section for supply air and return air in an air-conditioning apparatus | Seppo Kalevi Kanninen, Ingmar Erik Rolin | 1997-05-27 |
| 5573183 | Method and apparatus for heating building and ventilation air | — | 1996-11-12 |
| 4378196 | High-pressure centrifugal blower | — | 1983-03-29 |
| 4363601 | Impeller in a centrifugal blower | — | 1982-12-14 |
| 4342541 | Impeller assembly for a centrifugal blower | — | 1982-08-03 |
| 4285635 | Impeller in a centrifugal blower | Olli J. Pukkila | 1981-08-25 |