Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5766409 | Apparatus for leveling and supporting the hot plates in a double backer for corrugated paperboard | Carl R. Marschke | 1998-06-16 |
| 5578160 | Heat transfer control system for a double backer | Paul T. Melby | 1996-11-26 |
| 5501762 | Hot plate for corrugated paperboard double facer | Carl R. Marschke | 1996-03-26 |
| 5495092 | Heating device for corrugated paperboard production | Carl R. Marschke | 1996-02-27 |