Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6452354 | Closed loop control system for producing a sealed pouch | W. David Ellsworth, Larry Powell | 2002-09-17 |
| 5749822 | Gusset folding mechanism and method for plastic bag making machine | William D. Ellsworth, David Z. Dike | 1998-05-12 |
| 5529659 | Machine and associated apparatus for attaching zippers to plastic bags | William D. Ellsworth, David Z. Dike | 1996-06-25 |