Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7327542 | Current limiter for limiting current in case of a fault | Mathias Noe, Grigory Kuperman | 2008-02-05 |
| 4315816 | High intensity magnetic field drum separator | Guenter Ries, Siegfried Foerster, Franz Graf, Wolfgang Lehmann, Karl-Heinz Unkelbach +1 more | 1982-02-16 |
| 4272365 | Magnetic separator | Guenter Ries, Siegfried Foerster, Franz Graf, Wolfgang Lehmann, Karl-Heinz Unkelbach +1 more | 1981-06-09 |