Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4569168 | Self-elevating substructure for a portable oil derrick | Walter E. Garich | 1986-02-11 |
| 4569435 | Power-driven conveyor | — | 1986-02-11 |
| 4542808 | Order filling system | Harry J. Lloyd, Jr., Hoyt W. Huggins, Michael R. Lyon, David N. Thayer | 1985-09-24 |