Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6378261 | Wall system involving panels | — | 2002-04-30 |
| 5632126 | Wall system involving corrugated panels for making confinement cells | — | 1997-05-27 |
| 4555883 | Hoop beam equipped precast silo construction | Willis C. Haworth | 1985-12-03 |
| 4261147 | Hyperbolic natural draft cooling tower construction | — | 1981-04-14 |