Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6531881 | Measurement arrangement | Philip McGonnell, Peter Ward, Andrew John Fraser | 2003-03-11 |
| 6498568 | Pipeline communication system | David G. Austin, Koos Broekhuizen, Gerard Terence Foster | 2002-12-24 |
| 4967199 | Ground probing radar method and apparatus | David J. Gunton, Howard F. Scott, Michael Stansfield, Roger P. Ashworth | 1990-10-30 |
| 4295095 | Apparatus and method for detecting the location of metallic objects having alternating current passing therethrough | Richard Thomas, Stewart M. Pegler | 1981-10-13 |