Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5212896 | Control system for a walk behind trencher machine | Randy H. Hillard, Robert G. Draney, Virgil J. Hill | 1993-05-25 |
| 4377914 | Vertical lift and blade control mechanism for cable plows | Robert G. Draney | 1983-03-29 |