Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6241014 | Plunger lift controller and method | Ian S. Dees, Marina Drobnic, Chris Fields | 2001-06-05 |
| 5957200 | Plunger lift controller | Chris Fields | 1999-09-28 |
| 4859834 | Power controller for heat tracing cable which responds to ambient temperature | Jeffery P. Hausler, Paul C. Baria, Jeffrey B. Moore | 1989-08-22 |