Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4305246 | Ring rail with air-suspended spinning or twisting rings | Wolfgang Igel | 1981-12-15 |
| 4266397 | Method and apparatus for restarting individual winding units of a ring spinning or twisting frame | Wolfgang Igel | 1981-05-12 |