Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6220837 | Progressing cavity pump having a ratio of eccentricity, rotor diameter and stator lead | — | 2001-04-24 |
| 5474432 | Progressive cavity pump or motors | Stephen P. Hulley, Gareth David Thomas | 1995-12-12 |
| 5085564 | Flexible drive shaft | David K. Morris | 1992-02-04 |