Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4482126 | Universal multi-part form for casting concrete parapets | — | 1984-11-13 |
| 4474400 | Lifting device for massive precast concrete wall units | — | 1984-10-02 |
| D274762 | Lifting device | — | 1984-07-17 |
| 4453773 | Pavement breaking apparatus | — | 1984-06-12 |
| 4400149 | Concrete pipe making machine with redensification apparatus | Warren E. Kart | 1983-08-23 |
| 4372091 | Precast concrete structural unit and composite wall structure | William L. Brown | 1983-02-08 |
| 4351507 | Multi-part form with improved tie and stripping means | Warren E. Kart | 1982-09-28 |
| 4251196 | Apparatus for precasting concrete products | Warren E. Kart | 1981-02-17 |
| 4196161 | Method for precasting concrete products | Warren E. Kart | 1980-04-01 |