Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D603562 | Hair care caddy | — | 2009-11-03 |
| 7316542 | Fluid level control system | — | 2008-01-08 |
| 7314349 | Fluid level control system for progressive cavity pump | — | 2008-01-01 |
| 6409476 | Pumpjack dynamometer and method | — | 2002-06-25 |
| 6315523 | Electrically isolated pump-off controller | — | 2001-11-13 |
| 6176682 | Pumpjack dynamometer and method | — | 2001-01-23 |
| 5458466 | Monitoring pump stroke for minimizing pump-off state | — | 1995-10-17 |
| 4631954 | Apparatus for controlling a pumpjack prime mover | — | 1986-12-30 |
| 4363605 | Apparatus for generating an electrical signal which is proportional to the tension in a bridle | — | 1982-12-14 |
| 4208665 | Dynamometer for monitoring sucker rod strings | — | 1980-06-17 |