Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4360981 | Lip and tooth combination for bucket wheel excavator | Robert S. Bierwith | 1982-11-30 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4360981 | Lip and tooth combination for bucket wheel excavator | Robert S. Bierwith | 1982-11-30 |