Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882812 | Opening roller for an opening device of an open-end spinning machine | Eugen Bader | 1989-11-28 |
| 4866927 | Process for producing an open-end spinning rotor | Siegfried Kalitzki | 1989-09-19 |
| 4805395 | Opening roller for an opening device of an open-end spinning machine | Fritz Stahlecker, Hans Stahlecker, Eugen Bader | 1989-02-21 |
| 4637172 | Method and apparatus for treating open-end friction spinning rollers | Rolf Griesinger | 1987-01-20 |
| 4576000 | Spinning rotor for an open-end spinning device and process of making same | Rolf Griesinger | 1986-03-18 |
| 4574583 | Opening roller arrangement | Fritz Stahlecker, Rolf Griesinger | 1986-03-11 |