Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6426712 | Fault-signal generators and methods for resolver systems | Aengus Murray | 2002-07-30 |
| 5940920 | Pipe cleaning apparatus | Michael T. Hare, Michael Stahle | 1999-08-24 |
| 4517745 | Apparatus for measuring the shoulder of a drill pipe joint | — | 1985-05-21 |