Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5228221 | Boom assembly for a trencher machine | Stephen A. Youngers, Robert G. Draney | 1993-07-20 |
| 5212896 | Control system for a walk behind trencher machine | Howard A. Zimmerman, Robert G. Draney, Virgil J. Hill | 1993-05-25 |
| 4861195 | Cable plow chute | Robert G. Draney, Joseph J. Lesher | 1989-08-29 |
| 4404761 | Digging tooth mounting bracket | Stephen V. Paulin, Stephen A. Youngers | 1983-09-20 |