Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5782043 | Seismic correction system for retrofitting structural columns | C. Warren Duncan | 1998-07-21 |
| 4496026 | Founding ladder system | — | 1985-01-29 |
| 4340130 | Scaffold frame header | George E. Payne | 1982-07-20 |