Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4637172 | Method and apparatus for treating open-end friction spinning rollers | Gerhard Fetzer | 1987-01-20 |
| 4576000 | Spinning rotor for an open-end spinning device and process of making same | Gerhard Fetzer | 1986-03-18 |
| 4574583 | Opening roller arrangement | Fritz Stahlecker, Gerhard Fetzer | 1986-03-11 |