Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4461705 | Endless chain driven rack and pinion displacement device for filter presses | — | 1984-07-24 |
| 4362616 | Apparatus for moving the filter plates of a filter press | Peter Spiegel | 1982-12-07 |
| 4325396 | Apparatus for cleaning a filter press | — | 1982-04-20 |