Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4227545 | Valve for controlling the flow of hot fluids | Horst Kuppka, Helmut Zilling | 1980-10-14 |
| 4195655 | Valve for regulating the flow of hot fluids | Horst Kuppka, Helmut Zilling | 1980-04-01 |