Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6305466 | Three circuit plate heat exchanger | Thomas Dahlberg | 2001-10-23 |
| 5988269 | Plate heat exchanger | Sven-Gunnar Karlsson, Thomas Dahlberg, Veikko Pihlajaniemi | 1999-11-23 |
| 4781533 | Control system for propeller with controllable pitch | — | 1988-11-01 |
| 4350667 | Extraction of copper from an ammoniacal copper solution | Harald D. Ottertun, Hans Reinhardt | 1982-09-21 |