Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6782952 | Hydraulic stepping valve actuated sliding sleeve | Edward Zisk, Brian A. Roth | 2004-08-31 |
| 6722439 | Multi-positioned sliding sleeve valve | Jeffry S. Edwards, Michael A. Carmody | 2004-04-20 |
| 5771969 | Helical bearing anchor and catcher | — | 1998-06-30 |
| 5688112 | Rotor axis aligned tube and outlet for a peristaltic pump system | — | 1997-11-18 |
| 5636690 | Torque anchor | — | 1997-06-10 |
| 5350013 | Mandrel operated torque anchor | Bill Jani, John Ravensbergen | 1994-09-27 |