Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859543 | Earth working tool having a working element fabricated from cemented tungsten carbide compositions with enhanced properties | Mark S. Greenfield | 1989-08-22 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859543 | Earth working tool having a working element fabricated from cemented tungsten carbide compositions with enhanced properties | Mark S. Greenfield | 1989-08-22 |