Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5829338 | Pump having unidirectional tapered land thrust bearing cluster | Robert H. Ash, Jr. | 1998-11-03 |
| 5784948 | Positive displacement pump having levitating magnetic piston spring circuit | Robert H. Ash, Jr. | 1998-07-28 |
| 5678471 | Swashplate pump incorporating a dual location cluster bearing | Robert H. Ash, Jr. | 1997-10-21 |
| 5676035 | Cam follower retainer for a swashplate pump | Robert H. Ash, Jr. | 1997-10-14 |