Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4343988 | Electrical resistance water heating device, particularly for beverage preparation machines | Hanno Roller, Helmut Ohnmacht, Karl-Heinz Nauerth | 1982-08-10 |
| 4334141 | Combined electric water heating and vessel support plate for a beverage preparation device | Hanno Roller, Helmut Ohnmacht, Karl-Heinz Nauerth | 1982-06-08 |