Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4648325 | Linear drive unit | Russell H. Scheel, Barry L. Ziegenfus | 1987-03-10 |
| 4593623 | Reversible, accumulating longitudinal drive tube carrier | Russell H. Scheel, Barry L. Ziegenfus | 1986-06-10 |
| 4462313 | Apparatus for shuttling driverless vehicles | Craig F. Sleep | 1984-07-31 |
| 4428298 | Vehicle speed control transition module | John M. Sipos | 1984-01-31 |