Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5372482 | Detection of rod pump fillage from motor power | Robert K. London | 1994-12-13 |
| 5318409 | Rod pump flow rate determination from motor power | Robert K. London, Denis A. Mueller | 1994-06-07 |