Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5755825 | Sharpener for slitting blade | Jeffrey Erickson | 1998-05-26 |
| 5483856 | Apparatus and method for slitting corrugated paperboard boxes | Dean W. Smitterberg, William R. Nachtrab, Jr., Bruce Beutler | 1996-01-16 |