Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7080824 | Chain motor drive controller | David W. George, Glenn R. Bracegirdle, Joseph Peppard, Christopher E. Guth | 2006-07-25 |
| 7080825 | Chain motor drive control system | David W. George, Glenn R. Bracegirdle, Joseph Peppard, Christopher E. Guth | 2006-07-25 |
| 6209852 | Removable chain hoist position encoder assembly | David W. George, Christopher E. Guth, Ivan J. Morgan, Glenn R. Bracegirdle, Richard J. Romano +1 more | 2001-04-03 |