Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6339973 | Slave valve with integral syncho-saver logic | Daniel A. Monette | 2002-01-22 |
| 5737969 | Single shaft shifting mechanism | Michael J. Huggins, Joseph D. Reynolds, Daniel M. Armock | 1998-04-14 |
| 5409337 | Retained seal assembly | Dale E. Muyskens, Eugene Mazurek | 1995-04-25 |