Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4583747 | Bearing seal for a centrifuge | Erhard Aufderhaar, Siegfried Pfaff | 1986-04-22 |
| 4569760 | Discharge shaft for a vertical centrifuge | Erhard Aufderharr, Siegfried Pfaff | 1986-02-11 |