Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7268541 | Detecting failures of flexible multistrand steel structures | David John Buttle, William J. Dalzell, Stephen Frank Burch, Geoffrey Charles Eckold | 2007-09-11 |
| 7053606 | Measurement of residual and thermally-induced stress in a rail | David John Buttle, William J. Dalzell | 2006-05-30 |
| 6964202 | Detection of rolling contact fatigue | David John Buttle, William J. Dalzell | 2005-11-15 |