Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5333591 | Device to control a gas-fired appliance | Dieter Wolf, Manfred Hoppe, Holns J. Schollmeyer | 1994-08-02 |
| 4802142 | Device for controlling the flow rate of a fuel gas/air mixture and/or the ratio between fuel gas and air in a fuel gas/air mixture | Dieter Wolf, Friedrich Vissel | 1989-01-31 |
| 4384792 | Process and apparatus for the combustionless measurement and/or control of the amount of heat fed to gas consumption devices | Hans Sommers, Friedrich Vissel | 1983-05-24 |