Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5122633 | Method and apparatus for radiation microwave energy into material containing water or mixed with water | Erwin Berger, Johann Freissmuth, Helmut Freiberger | 1992-06-16 |
| 5098665 | Device for heating of articles and organisms | Helmut Katschnig, Christian Bischoff, Erwin Berger | 1992-03-24 |