Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8777015 | Magnetic separator | David Chappie, Martin J. Halverson | 2014-07-15 |
| 8708152 | Iron ore separation device | Shawn Henriksen, David Chappie, Travis Edward Cunningham, Danilo Bibancos | 2014-04-29 |
| 8292084 | Magnetic separator | David Chappie, Martin J. Halverson | 2012-10-23 |