Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5392998 | Sifter for sifting granular material and grinding system with insertion of such a sifter | Siegfried Strasser | 1995-02-28 |
| 5158182 | Sifter | Frank Fischer-Helwig, Albrecht Wolter | 1992-10-27 |
| 5005770 | Sifter for sifting granular material and grinding system having introduction thereinto of such a sifter | — | 1991-04-09 |