Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5733081 | Apparatus for cutting mat board | Robert K. Dowdle | 1998-03-31 |
| 5317943 | Method and apparatus for ultrasonically cutting mat board | — | 1994-06-07 |
| 5100270 | Apparatus and method for cutting mat board | Robert K. Dowdle | 1992-03-31 |