Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4934133 | Method of producing a rotating air layer and false-twist air jet nozzle for practicing such method | Herbert Stalder | 1990-06-19 |
| 4781333 | Arrangement for holding yarn packages | Walter Hefti, Urs Keller | 1988-11-01 |
| 4718615 | Arrangement for holding yarn packages | Walter Hefti, Urs Keller | 1988-01-12 |