Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6145563 | Vertical pressure sealer apparatus | Michael S. Kalisiak, Rebecca L. Parker, Richard S. Downing, John Van de Ven, David G. Wagner | 2000-11-14 |
| 5300177 | Method of pressure sealing business forms | Richard S. Downing | 1994-04-05 |
| 5290385 | Multiple set pressure sealer rollers | Richard S. Downing | 1994-03-01 |