Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4858685 | Plate-type heat exchanger | Andras Harmatha | 1989-08-22 |
| 4813237 | Apparatus for making up feed water for a power station | Istvan Szabo, Istvan Papp, Jozsef Csaszni, Gyula Lengyel, Pal Resch +2 more | 1989-03-21 |
| 4796692 | Convector with finned tubes | Jozsef Szabo | 1989-01-10 |