Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4963255 | Plate shifter for filter press | Daniel DeHaan, Sherwood Steketee | 1990-10-16 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4963255 | Plate shifter for filter press | Daniel DeHaan, Sherwood Steketee | 1990-10-16 |