Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864679 | Apparatus for cleaning a textile machine comprising a plurality of operating positions | — | 1989-09-12 |
| 4856269 | Device for starting or recommencing spinning of a yarn in a friction spinning apparatus | Samuel Wehrli | 1989-08-15 |
| 4854118 | Methof of, and apparatus for, producing a friction spun yarn | Urs Keller, Herbert Stalder | 1989-08-08 |
| 4848079 | Friction spinning drum | Herbert Stalder, Urs Keller, Werner Oeggerli | 1989-07-18 |