Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4892261 | Material communitor | Thomas E. Rolle, David J. Nebel, William P. Liljestrom | 1990-01-09 |
| 4852818 | Material comminutor | Thomas E. Rolle, David J. Nebel, William P. Liljestrom | 1989-08-01 |
| 4851110 | Air pump separator method and apparatus | Thomas E. Rolle, David J. Nebel, William P. Liljestrom | 1989-07-25 |
| 4718609 | Material comminutor | Thomas E. Rolle, David J. Nebel, William P. Liljestrom | 1988-01-12 |
| 4648560 | Screen separator method for foundry waste materials | Thomas E. Rolle, David J. Nebel, William P. Liljestrom | 1987-03-10 |