Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7861807 | Drill bit including one piece cutting head | Thomas J. Quinn, William R. Stumpf, Albert Leidl, Rudolf Jungwirth | 2011-01-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7861807 | Drill bit including one piece cutting head | Thomas J. Quinn, William R. Stumpf, Albert Leidl, Rudolf Jungwirth | 2011-01-04 |