Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4542943 | Earthworking tool for protecting from abnormally high cutting loads | — | 1985-09-24 |
| 4194791 | Grooved earthworking bit and method of enhancing the life thereof | Seibert S. Oaks | 1980-03-25 |