Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9139207 | Modular monorail buss control system and method | Robert Joseph Walkerdine | 2015-09-22 |
| 8733252 | Electric monorail part carrier | Hans E. Rodgers, Robert Joseph Walkerdine, John P. Pasto | 2014-05-27 |