Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5857605 | Vacuum assisted web drive for corrugator double backer | Harold D. Welch, Matthew Tourdot, Carl R. Marschke | 1999-01-12 |
| 5706994 | Vacuum assisted web drive for corrugator double backer | Harold D. Welch, Matthew Tourdot, Carl R. Marschke | 1998-01-13 |