Issued Patents 2021
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11203490 | Torsion weldment for a telescopic boom of a material conveyor apparatus | Darren L. DeGraw | 2021-12-21 |
| 11117748 | Gravitationally directed conveyor material cleat | Darren L De Graw | 2021-09-14 |
| 11021327 | Telescopic material conveyer apparatus | Robin Porter, Darren L. DeGraw | 2021-06-01 |
| 10899545 | Hand rail system integrated with a materials conveyor | — | 2021-01-26 |