Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7820448 | Waste materials sampling, assaying for desired components or metals, and refining | Piers Scott Grumett, Brian Harrison | 2010-10-26 |
| 7439070 | Waste material handling, sampling and metal content value calculation | Piers Scott Grumett, Brian Harrison | 2008-10-21 |