Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5620056 | Coupling for a downhole tandem drilling motor | — | 1997-04-15 |
| 5474334 | Coupling assembly | — | 1995-12-12 |
| 5090497 | Flexible coupling for progressive cavity downhole drilling motor | Herb Beimgraben, Benny Melton, Paul Andrew Reinhardt | 1992-02-25 |
| 4679638 | Downhole progressive cavity type drilling motor with flexible connecting rod | — | 1987-07-14 |
| 4676725 | Moineau type gear mechanism with resilient sleeve | — | 1987-06-30 |
| 4641717 | Connector housing | — | 1987-02-10 |
| 4636151 | Downhole progressive cavity type drilling motor with flexible connecting rod | — | 1987-01-13 |