Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7990613 | Depth enhancing screen | Catherine Ansbro, Eamonn Ansbro | 2011-08-02 |
| 4458601 | Speed control system for a pipeline inspection vehicle | Ian Smith | 1984-07-10 |
| 4447777 | Magnetic pipeline inspection vehicle with metallic foil and bristle contacts supporting the vehicle | Michael R. G. Sharp | 1984-05-08 |
| 4388871 | Speed control system for a pipeline inspection vehicle | Ian Smith | 1983-06-21 |
| 4310796 | Magnet assemblies with plural metallic foil contact members for pipeline inspection vehicles | David Jacob McGee | 1982-01-12 |
| 4240613 | Winch mechanism | — | 1980-12-23 |
| 4223871 | Winch mechanism | — | 1980-09-23 |