Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4852217 | Carder for manufacturing non-wovens from fibrous material | Siegfried Bernhardt, Alfred Knake | 1989-08-01 |
| 4723343 | Method and apparatus of carding | Siegfried Bernhardt, Dietrich Menzel, Dieter Muller | 1988-02-09 |
| 4523350 | Carder for manufacturing non-woven, formed fabric from fibrous substances | Siegfried Bernhardt, Otto Strobl, Dietrich Menzel | 1985-06-18 |