Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4960378 | Gas burner | Hans Berg | 1990-10-02 |
| 4699122 | Storage water heater system | Horst Brunje | 1987-10-13 |
| 4557220 | Gas apparatus for producing hot water | Horst Brunje | 1985-12-10 |
| 4501127 | Heating system incorporating an absorption-type heat pump and methods for the operation thereof | Hans Sommers | 1985-02-26 |
| 4457704 | Method for the operation of a gas burner exposed to an air current as well as burners to implement the method | Hans Sommers, Hans Berg | 1984-07-03 |