Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7080824 | Chain motor drive controller | David W. George, Glenn R. Bracegirdle, Thomas G. Booth, Christopher E. Guth | 2006-07-25 |
| 7080825 | Chain motor drive control system | David W. George, Glenn R. Bracegirdle, Thomas G. Booth, Christopher E. Guth | 2006-07-25 |
| 6600289 | Portable three-phase AC power supply for chain hoist motor | David W. George, Glenn R. Bracegirdle | 2003-07-29 |