Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4956545 | Heater with tap | Helmut Ohnmacht, Klaus Meywald | 1990-09-11 |
| 4418272 | Electric heater | Hanno Roller | 1983-11-29 |
| 4371777 | Continuous flow electric water heater | Hanno Roller | 1983-02-01 |
| 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 |