Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4674802 | Multi-insert cutter bit | Alex G. McKenna | 1987-06-23 |
| 4360068 | Furrowing tool | Earle W. Stephenson | 1982-11-23 |
| 4216832 | Furrowing tool | Earle W. Stephenson | 1980-08-12 |
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4674802 | Multi-insert cutter bit | Alex G. McKenna | 1987-06-23 |
| 4360068 | Furrowing tool | Earle W. Stephenson | 1982-11-23 |
| 4216832 | Furrowing tool | Earle W. Stephenson | 1980-08-12 |