Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4947634 | Ring spinning or ring twisting machine | — | 1990-08-14 |
| 4891566 | Method for speed regulation and switch arrangement for performing the method | Stefan Wieczorek | 1990-01-02 |