Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5660095 | Apparatus for slitting corrugated paperboard boxes | Dean W. Smitterberg | 1997-08-26 |
| D370835 | Lawn chair beverage holder | — | 1996-06-18 |
| 5483856 | Apparatus and method for slitting corrugated paperboard boxes | Dean W. Smitterberg, David G. Kadlecek, Bruce Beutler | 1996-01-16 |
| 5375492 | Apparatus and method for slitting corrugated paperboard boxes | Dean W. Smitterberg, Richard F. Paulson, Timothy C. Prochnow, Eugene C. Carlson | 1994-12-27 |
| 5203246 | System to align and square boxes | Dean W. Smitterberg, Timothy C. Prochnow | 1993-04-20 |