Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5410787 | Apparatus for stretching a synthetic yarn in a stretching bath | Felix Graf | 1995-05-02 |
| 5324905 | Drawing roller unit with scavenging means | Rolf Widmer, Konrad Boos, Armin Wirz | 1994-06-28 |
| 5159166 | Drawroll unit | Konrad Boos, Bruno Gemperle, Felix Graf, Rodolf Leinhard, Emil Munz +3 more | 1992-10-27 |