Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D647726 | Pedestal | — | 2011-11-01 |
| 5030033 | Material containment system | Stephen D. Heintzelman, William E. Montooth | 1991-07-09 |
| 4969626 | Adjustable form for casting concrete culverts | — | 1990-11-13 |
| 4817318 | Demountable road sign | — | 1989-04-04 |