Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6332408 | Pressure feedback signal to optimise combustion air control | Michael W. Howlett, William E. Crowle | 2001-12-25 |
| 6016819 | High turbulence multiple stage wire pickling system | William E. Crowle | 2000-01-25 |
| 4899363 | Gas bearings for gas lasers | Robert A. Golobic, Stephan G. Derrickson | 1990-02-06 |