Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5421267 | Articulated pinch drive | Ted W. Frederick, Gregory L. Bahrman, Aidan J. Bradley | 1995-06-06 |
| 5409226 | Apparatus for providing position signals | Charles E. Schrader, Joseph O. Garlington | 1995-04-25 |
| 5305693 | System and method for externally controlled spacing of self propelled vehicles along a rail | Bruce S. Johnson | 1994-04-26 |