Issued Patents 1982
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4343988 | Electrical resistance water heating device, particularly for beverage preparation machines | Hanno Roller, Helmut Ohnmacht, Ludwig Lieber | 1982-08-10 |
| 4334141 | Combined electric water heating and vessel support plate for a beverage preparation device | Hanno Roller, Helmut Ohnmacht, Ludwig Lieber | 1982-06-08 |
| 4331860 | Electrical resistance heating element | Hanno Roller, Rudi Kitt | 1982-05-25 |
| 4327282 | Electrical resistance heating element | — | 1982-04-27 |