Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6074520 | Heated holddown mat for corrugator double backer | Carl R. Marschke, Matthew Chuzles | 2000-06-13 |
| 6018870 | Sectional construction for axially long roll | Dean David Marschke, Carl R. Marschke | 2000-02-01 |