Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4512426 | Rotating bits including a plurality of types of preferential cutting elements | — | 1985-04-23 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4512426 | Rotating bits including a plurality of types of preferential cutting elements | — | 1985-04-23 |