Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5128598 | Material handling vehicle steering system | — | 1992-07-07 |
| 5113344 | Material handling vehicle identification tag | David L. Kellogg, James M. Simmons, Jr., Michael S. Bachman | 1992-05-12 |
| 5070283 | Traction motor controller for forklift vehicles | — | 1991-12-03 |
| 5039924 | Traction motor optimizing system for forklift vehicles | — | 1991-08-13 |
| 4942529 | Lift truck control systems | Ralph E. Allen, David L. Kellogg, Stephen Page, David J. Radley | 1990-07-17 |