Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6408221 | Method of and installation for optimizing the process of cleaning cotton | Robert Demuth, Jurg Faas, Peter Fritzsche | 2002-06-18 |
| 5142741 | Carding elements with variably inclined teeth for working textile fibers and method | Robert Demuth, Peter Fritzsche, Paul Staheli | 1992-09-01 |