Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4343395 | Roller hearth furnace | Leonard G. Nowak, Paul K. Shefsiek | 1982-08-10 |
| 4225121 | Energy efficient heat-treating furnace system | Robert W. Meyer | 1980-09-30 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4343395 | Roller hearth furnace | Leonard G. Nowak, Paul K. Shefsiek | 1982-08-10 |
| 4225121 | Energy efficient heat-treating furnace system | Robert W. Meyer | 1980-09-30 |