Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5181693 | Extensible lifting tower with hydraulic cylinders in series | — | 1993-01-26 |
| 4573853 | Gantries for hauling heavy loads over fixed paths | — | 1986-03-04 |
| 4381839 | Gantry having adjustable side supports | Edgar D. Engler | 1983-05-03 |