Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4525287 | Thread and bearing lubricant | — | 1985-06-25 |
| 4436158 | Releasable drill string device and method | — | 1984-03-13 |
| 4334444 | Power tongs | John J. Staudt | 1982-06-15 |
| 4222174 | Method and apparatus for gaging and joining pipe | Ernest D. Hauk, Thomas D. Hauk | 1980-09-16 |
| 4215602 | Power tongs | John J. Staudt | 1980-08-05 |