Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D308213 | Electric robot | Gary Lee Jones, Robert James Todd, Norman N. Fender, Alexander Bally | 1990-05-29 |
| 4784010 | Electric robotic work unit | Robert James Todd, Norman N. Fender | 1988-11-15 |
| 4411319 | Sensitivity adjusting apparatus for tractor draft sensing and control system | Lee E. Elfes | 1983-10-25 |
| 4193190 | Filament trimmer cutting head improvement | — | 1980-03-18 |
| 4192750 | Stackable filter head unit | Lee E. Elfes | 1980-03-11 |